./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI --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 87c512ff7772c648d2c2d28b30bf4d136366c31440eeddc6ab833b392d36d780 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:06:01,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:06:01,868 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:06:01,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:06:01,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:06:01,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:06:01,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:06:01,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:06:01,901 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:06:01,902 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:06:01,903 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:06:01,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:06:01,904 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:06:01,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:06:01,906 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:06:01,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:06:01,907 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:06:01,907 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:06:01,908 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:06:01,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:06:01,909 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:06:01,910 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:06:01,911 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:06:01,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:06:01,912 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:06:01,913 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:06:01,913 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:06:01,914 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:06:01,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:06:01,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:06:01,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:06:01,917 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:06:01,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:06:01,918 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:06:01,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:06:01,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:06:01,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:06:01,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:06:01,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:06:01,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:06:01,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:06:01,931 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_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87c512ff7772c648d2c2d28b30bf4d136366c31440eeddc6ab833b392d36d780 [2023-11-24 22:06:02,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:06:02,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:06:02,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:06:02,234 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:06:02,235 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:06:02,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2023-11-24 22:06:05,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:06:05,798 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:06:05,799 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/sv-benchmarks/c/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2023-11-24 22:06:05,816 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/data/b1f2c5285/918622dc1f3a462d8ed385d4be4bdda4/FLAGa8e3c9cbe [2023-11-24 22:06:05,832 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/data/b1f2c5285/918622dc1f3a462d8ed385d4be4bdda4 [2023-11-24 22:06:05,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:06:05,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:06:05,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:06:05,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:06:05,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:06:05,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:06:05" (1/1) ... [2023-11-24 22:06:05,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d6605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:05, skipping insertion in model container [2023-11-24 22:06:05,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:06:05" (1/1) ... [2023-11-24 22:06:05,901 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:06:06,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:06:06,467 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:06:06,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:06:06,565 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:06:06,565 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:06:06,573 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:06:06,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06 WrapperNode [2023-11-24 22:06:06,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:06:06,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:06:06,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:06:06,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:06:06,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,685 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 142 [2023-11-24 22:06:06,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:06:06,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:06:06,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:06:06,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:06:06,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,703 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,722 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 22:06:06,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:06:06,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:06:06,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:06:06,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:06:06,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (1/1) ... [2023-11-24 22:06:06,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:06:06,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:06:06,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:06:06,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6480301-986e-4175-aaa7-68b7eecbc813/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:06:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:06:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:06:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:06:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 22:06:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 22:06:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:06:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:06:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:06:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 22:06:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 22:06:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 22:06:06,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 22:06:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 22:06:06,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 22:06:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:06:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:06:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:06:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 22:06:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 22:06:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:06:06,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:06:06,875 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:06:07,068 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:06:07,071 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:06:07,554 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:06:07,905 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:06:07,905 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:06:07,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:06:07 BoogieIcfgContainer [2023-11-24 22:06:07,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:06:07,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:06:07,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:06:07,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:06:07,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:06:05" (1/3) ... [2023-11-24 22:06:07,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b84ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:06:07, skipping insertion in model container [2023-11-24 22:06:07,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:06:06" (2/3) ... [2023-11-24 22:06:07,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b84ff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:06:07, skipping insertion in model container [2023-11-24 22:06:07,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:06:07" (3/3) ... [2023-11-24 22:06:07,916 INFO L112 eAbstractionObserver]: Analyzing ICFG mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2023-11-24 22:06:07,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:06:07,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-24 22:06:07,940 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:06:07,995 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 22:06:08,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 56 transitions, 124 flow [2023-11-24 22:06:08,073 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2023-11-24 22:06:08,073 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:06:08,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-24 22:06:08,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 56 transitions, 124 flow [2023-11-24 22:06:08,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 53 transitions, 115 flow [2023-11-24 22:06:08,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:06:08,101 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;@467ffe14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:06:08,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-24 22:06:08,105 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:06:08,105 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 22:06:08,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:06:08,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:08,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:06:08,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:08,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash 12739, now seen corresponding path program 1 times [2023-11-24 22:06:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:08,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390273405] [2023-11-24 22:06:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:08,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:08,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:08,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390273405] [2023-11-24 22:06:08,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390273405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:08,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:08,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:06:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654517207] [2023-11-24 22:06:08,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:08,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:08,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:08,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 56 [2023-11-24 22:06:08,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:08,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:08,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 56 [2023-11-24 22:06:08,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:09,279 INFO L124 PetriNetUnfolderBase]: 1057/2055 cut-off events. [2023-11-24 22:06:09,279 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-24 22:06:09,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3681 conditions, 2055 events. 1057/2055 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13997 event pairs, 791 based on Foata normal form. 120/1973 useless extension candidates. Maximal degree in co-relation 3667. Up to 1193 conditions per place. [2023-11-24 22:06:09,311 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 30 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-24 22:06:09,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 189 flow [2023-11-24 22:06:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:06:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-24 22:06:09,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2023-11-24 22:06:09,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-24 22:06:09,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-24 22:06:09,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:09,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-24 22:06:09,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:09,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:09,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:09,346 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 115 flow. Second operand 3 states and 122 transitions. [2023-11-24 22:06:09,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 189 flow [2023-11-24 22:06:09,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 22:06:09,360 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 108 flow [2023-11-24 22:06:09,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-11-24 22:06:09,368 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-24 22:06:09,368 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 108 flow [2023-11-24 22:06:09,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:09,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:09,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:06:09,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:06:09,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:09,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash 12740, now seen corresponding path program 1 times [2023-11-24 22:06:09,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:09,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982797711] [2023-11-24 22:06:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:09,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:09,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:09,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982797711] [2023-11-24 22:06:09,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982797711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:09,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:09,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:06:09,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111441496] [2023-11-24 22:06:09,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:09,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:09,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 56 [2023-11-24 22:06:09,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:09,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:09,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 56 [2023-11-24 22:06:09,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:10,097 INFO L124 PetriNetUnfolderBase]: 1057/2054 cut-off events. [2023-11-24 22:06:10,097 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-24 22:06:10,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 2054 events. 1057/2054 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14039 event pairs, 791 based on Foata normal form. 1/1853 useless extension candidates. Maximal degree in co-relation 3727. Up to 1192 conditions per place. [2023-11-24 22:06:10,122 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 29 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-24 22:06:10,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 186 flow [2023-11-24 22:06:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:06:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-24 22:06:10,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2023-11-24 22:06:10,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-24 22:06:10,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-24 22:06:10,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:10,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-24 22:06:10,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,140 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 108 flow. Second operand 3 states and 122 transitions. [2023-11-24 22:06:10,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 186 flow [2023-11-24 22:06:10,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:06:10,146 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 106 flow [2023-11-24 22:06:10,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-11-24 22:06:10,148 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2023-11-24 22:06:10,149 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 106 flow [2023-11-24 22:06:10,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:10,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:06:10,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:06:10,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:10,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:10,159 INFO L85 PathProgramCache]: Analyzing trace with hash 379894083, now seen corresponding path program 1 times [2023-11-24 22:06:10,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:10,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021169824] [2023-11-24 22:06:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:10,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:10,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021169824] [2023-11-24 22:06:10,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021169824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:10,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:10,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:06:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486114373] [2023-11-24 22:06:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:10,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:10,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 56 [2023-11-24 22:06:10,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:10,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 56 [2023-11-24 22:06:10,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:10,749 INFO L124 PetriNetUnfolderBase]: 825/1487 cut-off events. [2023-11-24 22:06:10,749 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-24 22:06:10,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2815 conditions, 1487 events. 825/1487 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8803 event pairs, 457 based on Foata normal form. 0/1466 useless extension candidates. Maximal degree in co-relation 2804. Up to 1009 conditions per place. [2023-11-24 22:06:10,762 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 33 selfloop transitions, 2 changer transitions 2/63 dead transitions. [2023-11-24 22:06:10,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 216 flow [2023-11-24 22:06:10,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:06:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2023-11-24 22:06:10,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7797619047619048 [2023-11-24 22:06:10,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 131 transitions. [2023-11-24 22:06:10,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 131 transitions. [2023-11-24 22:06:10,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:10,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 131 transitions. [2023-11-24 22:06:10,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,773 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 106 flow. Second operand 3 states and 131 transitions. [2023-11-24 22:06:10,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 216 flow [2023-11-24 22:06:10,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:06:10,777 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 102 flow [2023-11-24 22:06:10,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-24 22:06:10,779 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2023-11-24 22:06:10,780 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 102 flow [2023-11-24 22:06:10,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:10,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:06:10,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:06:10,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:10,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:10,782 INFO L85 PathProgramCache]: Analyzing trace with hash 379892579, now seen corresponding path program 1 times [2023-11-24 22:06:10,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:10,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104778450] [2023-11-24 22:06:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:10,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:10,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104778450] [2023-11-24 22:06:10,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104778450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:10,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:10,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:06:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138964744] [2023-11-24 22:06:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:10,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:10,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:10,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 56 [2023-11-24 22:06:10,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:10,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:10,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 56 [2023-11-24 22:06:10,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:11,182 INFO L124 PetriNetUnfolderBase]: 724/1471 cut-off events. [2023-11-24 22:06:11,182 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-11-24 22:06:11,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1471 events. 724/1471 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9820 event pairs, 416 based on Foata normal form. 0/1401 useless extension candidates. Maximal degree in co-relation 2688. Up to 940 conditions per place. [2023-11-24 22:06:11,196 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 27 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-24 22:06:11,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 176 flow [2023-11-24 22:06:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:06:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 22:06:11,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2023-11-24 22:06:11,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 22:06:11,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 22:06:11,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:11,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 22:06:11,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,203 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 102 flow. Second operand 3 states and 117 transitions. [2023-11-24 22:06:11,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 176 flow [2023-11-24 22:06:11,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:06:11,205 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 100 flow [2023-11-24 22:06:11,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-11-24 22:06:11,207 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-11-24 22:06:11,208 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 100 flow [2023-11-24 22:06:11,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:11,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:06:11,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:06:11,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:11,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:11,210 INFO L85 PathProgramCache]: Analyzing trace with hash 379892580, now seen corresponding path program 1 times [2023-11-24 22:06:11,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:11,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275506061] [2023-11-24 22:06:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:11,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:11,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:11,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275506061] [2023-11-24 22:06:11,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275506061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:11,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:11,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:06:11,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282781380] [2023-11-24 22:06:11,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:11,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:11,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:11,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 56 [2023-11-24 22:06:11,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:11,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 56 [2023-11-24 22:06:11,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:11,607 INFO L124 PetriNetUnfolderBase]: 721/1464 cut-off events. [2023-11-24 22:06:11,607 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-24 22:06:11,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2643 conditions, 1464 events. 721/1464 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9775 event pairs, 416 based on Foata normal form. 4/1399 useless extension candidates. Maximal degree in co-relation 2633. Up to 933 conditions per place. [2023-11-24 22:06:11,619 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 26 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-24 22:06:11,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 170 flow [2023-11-24 22:06:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:06:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-24 22:06:11,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-11-24 22:06:11,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-24 22:06:11,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-24 22:06:11,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:11,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-24 22:06:11,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,624 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 100 flow. Second operand 3 states and 119 transitions. [2023-11-24 22:06:11,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 170 flow [2023-11-24 22:06:11,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:06:11,626 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-24 22:06:11,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-24 22:06:11,627 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2023-11-24 22:06:11,627 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-24 22:06:11,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:11,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:11,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:06:11,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:11,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash 141384815, now seen corresponding path program 1 times [2023-11-24 22:06:11,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:11,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191879461] [2023-11-24 22:06:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:11,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:11,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:11,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191879461] [2023-11-24 22:06:11,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191879461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:11,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:11,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:06:11,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628134215] [2023-11-24 22:06:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:11,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:11,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:11,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:11,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:11,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 56 [2023-11-24 22:06:11,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:11,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 56 [2023-11-24 22:06:11,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:11,966 INFO L124 PetriNetUnfolderBase]: 738/1469 cut-off events. [2023-11-24 22:06:11,966 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-24 22:06:11,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1469 events. 738/1469 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9732 event pairs, 260 based on Foata normal form. 0/1426 useless extension candidates. Maximal degree in co-relation 2667. Up to 934 conditions per place. [2023-11-24 22:06:11,977 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 27 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-24 22:06:11,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 170 flow [2023-11-24 22:06:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:06:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-24 22:06:11,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2023-11-24 22:06:11,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-24 22:06:11,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-24 22:06:11,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:11,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-24 22:06:11,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,982 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 117 transitions. [2023-11-24 22:06:11,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 170 flow [2023-11-24 22:06:11,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:06:11,984 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-24 22:06:11,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-24 22:06:11,985 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-11-24 22:06:11,986 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-24 22:06:11,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:11,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:11,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:11,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:06:11,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:11,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:11,987 INFO L85 PathProgramCache]: Analyzing trace with hash 141384816, now seen corresponding path program 1 times [2023-11-24 22:06:11,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:11,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452564110] [2023-11-24 22:06:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:12,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:12,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452564110] [2023-11-24 22:06:12,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452564110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:12,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:12,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:06:12,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783180212] [2023-11-24 22:06:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:12,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:06:12,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:06:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:06:12,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 56 [2023-11-24 22:06:12,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:12,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:12,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 56 [2023-11-24 22:06:12,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:12,356 INFO L124 PetriNetUnfolderBase]: 721/1440 cut-off events. [2023-11-24 22:06:12,356 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-24 22:06:12,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 1440 events. 721/1440 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9559 event pairs, 260 based on Foata normal form. 12/1413 useless extension candidates. Maximal degree in co-relation 2617. Up to 905 conditions per place. [2023-11-24 22:06:12,367 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 26 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-11-24 22:06:12,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 166 flow [2023-11-24 22:06:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:06:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:06:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-24 22:06:12,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-11-24 22:06:12,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-24 22:06:12,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-24 22:06:12,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:12,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-24 22:06:12,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:12,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:12,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:12,372 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 119 transitions. [2023-11-24 22:06:12,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 166 flow [2023-11-24 22:06:12,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:06:12,374 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-24 22:06:12,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-24 22:06:12,375 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2023-11-24 22:06:12,376 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-24 22:06:12,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:12,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:12,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:12,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:06:12,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:12,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:12,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1750502056, now seen corresponding path program 1 times [2023-11-24 22:06:12,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:12,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062450538] [2023-11-24 22:06:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:12,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:12,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:12,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062450538] [2023-11-24 22:06:12,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062450538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:12,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:12,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:06:12,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128772665] [2023-11-24 22:06:12,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:12,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 22:06:12,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:12,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 22:06:12,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 22:06:13,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 56 [2023-11-24 22:06:13,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:13,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:13,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 56 [2023-11-24 22:06:13,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:13,824 INFO L124 PetriNetUnfolderBase]: 1504/2794 cut-off events. [2023-11-24 22:06:13,824 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-11-24 22:06:13,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 2794 events. 1504/2794 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 20088 event pairs, 477 based on Foata normal form. 60/2823 useless extension candidates. Maximal degree in co-relation 5225. Up to 916 conditions per place. [2023-11-24 22:06:13,846 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 51 selfloop transitions, 6 changer transitions 11/87 dead transitions. [2023-11-24 22:06:13,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 332 flow [2023-11-24 22:06:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:06:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 22:06:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2023-11-24 22:06:13,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6760204081632653 [2023-11-24 22:06:13,849 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 265 transitions. [2023-11-24 22:06:13,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 265 transitions. [2023-11-24 22:06:13,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:13,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 265 transitions. [2023-11-24 22:06:13,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:13,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:13,853 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:13,853 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 7 states and 265 transitions. [2023-11-24 22:06:13,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 332 flow [2023-11-24 22:06:13,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:06:13,857 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 129 flow [2023-11-24 22:06:13,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2023-11-24 22:06:13,861 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-24 22:06:13,861 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 129 flow [2023-11-24 22:06:13,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:13,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:13,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:13,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:06:13,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:13,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1750503308, now seen corresponding path program 1 times [2023-11-24 22:06:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:13,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447252371] [2023-11-24 22:06:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:14,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:14,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447252371] [2023-11-24 22:06:14,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447252371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:14,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:14,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:06:14,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047471030] [2023-11-24 22:06:14,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:14,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:06:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:14,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:06:14,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:06:14,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2023-11-24 22:06:14,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:14,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:14,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2023-11-24 22:06:14,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:17,056 INFO L124 PetriNetUnfolderBase]: 10443/16818 cut-off events. [2023-11-24 22:06:17,057 INFO L125 PetriNetUnfolderBase]: For 1751/1753 co-relation queries the response was YES. [2023-11-24 22:06:17,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33959 conditions, 16818 events. 10443/16818 cut-off events. For 1751/1753 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 128708 event pairs, 2654 based on Foata normal form. 0/16320 useless extension candidates. Maximal degree in co-relation 33943. Up to 6321 conditions per place. [2023-11-24 22:06:17,233 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 91 selfloop transitions, 31 changer transitions 16/153 dead transitions. [2023-11-24 22:06:17,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 153 transitions, 665 flow [2023-11-24 22:06:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:06:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:06:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 353 transitions. [2023-11-24 22:06:17,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7003968253968254 [2023-11-24 22:06:17,236 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 353 transitions. [2023-11-24 22:06:17,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 353 transitions. [2023-11-24 22:06:17,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:17,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 353 transitions. [2023-11-24 22:06:17,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.22222222222222) internal successors, (353), 9 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:17,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:17,239 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:17,239 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 129 flow. Second operand 9 states and 353 transitions. [2023-11-24 22:06:17,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 153 transitions, 665 flow [2023-11-24 22:06:17,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 153 transitions, 660 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 22:06:17,261 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 367 flow [2023-11-24 22:06:17,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2023-11-24 22:06:17,263 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 11 predicate places. [2023-11-24 22:06:17,263 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 367 flow [2023-11-24 22:06:17,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:17,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:17,264 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] [2023-11-24 22:06:17,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 22:06:17,264 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:17,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:17,265 INFO L85 PathProgramCache]: Analyzing trace with hash -225130261, now seen corresponding path program 1 times [2023-11-24 22:06:17,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:17,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168287206] [2023-11-24 22:06:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:17,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:17,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168287206] [2023-11-24 22:06:17,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168287206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:17,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:17,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:06:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075262578] [2023-11-24 22:06:17,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:17,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:06:17,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:17,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:06:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:06:17,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2023-11-24 22:06:17,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:17,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:17,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2023-11-24 22:06:17,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:20,576 INFO L124 PetriNetUnfolderBase]: 11769/19022 cut-off events. [2023-11-24 22:06:20,577 INFO L125 PetriNetUnfolderBase]: For 27320/27325 co-relation queries the response was YES. [2023-11-24 22:06:20,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57971 conditions, 19022 events. 11769/19022 cut-off events. For 27320/27325 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 147802 event pairs, 1333 based on Foata normal form. 406/19388 useless extension candidates. Maximal degree in co-relation 57948. Up to 4455 conditions per place. [2023-11-24 22:06:20,711 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 127 selfloop transitions, 52 changer transitions 17/211 dead transitions. [2023-11-24 22:06:20,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 211 transitions, 1440 flow [2023-11-24 22:06:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 22:06:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 22:06:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 439 transitions. [2023-11-24 22:06:20,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6532738095238095 [2023-11-24 22:06:20,714 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 439 transitions. [2023-11-24 22:06:20,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 439 transitions. [2023-11-24 22:06:20,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:20,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 439 transitions. [2023-11-24 22:06:20,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 36.583333333333336) internal successors, (439), 12 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:20,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 56.0) internal successors, (728), 13 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:20,719 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 56.0) internal successors, (728), 13 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:20,719 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 367 flow. Second operand 12 states and 439 transitions. [2023-11-24 22:06:20,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 211 transitions, 1440 flow [2023-11-24 22:06:20,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 211 transitions, 1440 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 22:06:20,988 INFO L231 Difference]: Finished difference. Result has 91 places, 109 transitions, 837 flow [2023-11-24 22:06:20,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=837, PETRI_PLACES=91, PETRI_TRANSITIONS=109} [2023-11-24 22:06:20,990 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2023-11-24 22:06:20,990 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 109 transitions, 837 flow [2023-11-24 22:06:20,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:20,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:20,991 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] [2023-11-24 22:06:20,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 22:06:20,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:20,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1025225745, now seen corresponding path program 1 times [2023-11-24 22:06:20,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:20,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542572790] [2023-11-24 22:06:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:20,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:21,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:21,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542572790] [2023-11-24 22:06:21,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542572790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:21,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:21,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:06:21,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942975587] [2023-11-24 22:06:21,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:21,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:06:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:06:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:06:21,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2023-11-24 22:06:21,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 109 transitions, 837 flow. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:21,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:21,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2023-11-24 22:06:21,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:25,005 INFO L124 PetriNetUnfolderBase]: 13050/21062 cut-off events. [2023-11-24 22:06:25,005 INFO L125 PetriNetUnfolderBase]: For 56110/56115 co-relation queries the response was YES. [2023-11-24 22:06:25,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74912 conditions, 21062 events. 13050/21062 cut-off events. For 56110/56115 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 165932 event pairs, 2600 based on Foata normal form. 170/21220 useless extension candidates. Maximal degree in co-relation 74879. Up to 6040 conditions per place. [2023-11-24 22:06:25,131 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 111 selfloop transitions, 61 changer transitions 99/286 dead transitions. [2023-11-24 22:06:25,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 286 transitions, 2603 flow [2023-11-24 22:06:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 22:06:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 22:06:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 445 transitions. [2023-11-24 22:06:25,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6622023809523809 [2023-11-24 22:06:25,134 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 445 transitions. [2023-11-24 22:06:25,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 445 transitions. [2023-11-24 22:06:25,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:25,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 445 transitions. [2023-11-24 22:06:25,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:25,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 56.0) internal successors, (728), 13 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:25,139 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 56.0) internal successors, (728), 13 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:25,139 INFO L175 Difference]: Start difference. First operand has 91 places, 109 transitions, 837 flow. Second operand 12 states and 445 transitions. [2023-11-24 22:06:25,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 286 transitions, 2603 flow [2023-11-24 22:06:26,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 286 transitions, 2579 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-24 22:06:26,308 INFO L231 Difference]: Finished difference. Result has 111 places, 114 transitions, 1145 flow [2023-11-24 22:06:26,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1145, PETRI_PLACES=111, PETRI_TRANSITIONS=114} [2023-11-24 22:06:26,309 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 50 predicate places. [2023-11-24 22:06:26,309 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 1145 flow [2023-11-24 22:06:26,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:26,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:26,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:26,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 22:06:26,310 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:26,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:26,311 INFO L85 PathProgramCache]: Analyzing trace with hash 813035719, now seen corresponding path program 1 times [2023-11-24 22:06:26,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:26,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690013647] [2023-11-24 22:06:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:26,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:27,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:27,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690013647] [2023-11-24 22:06:27,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690013647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:27,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:06:27,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114326840] [2023-11-24 22:06:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:27,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 22:06:27,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 22:06:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:06:27,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 56 [2023-11-24 22:06:27,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 1145 flow. Second operand has 10 states, 10 states have (on average 27.5) internal successors, (275), 10 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:27,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:27,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 56 [2023-11-24 22:06:27,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:31,590 INFO L124 PetriNetUnfolderBase]: 12510/22901 cut-off events. [2023-11-24 22:06:31,590 INFO L125 PetriNetUnfolderBase]: For 102854/107060 co-relation queries the response was YES. [2023-11-24 22:06:31,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81797 conditions, 22901 events. 12510/22901 cut-off events. For 102854/107060 co-relation queries the response was YES. Maximal size of possible extension queue 1639. Compared 222616 event pairs, 6941 based on Foata normal form. 912/22408 useless extension candidates. Maximal degree in co-relation 81752. Up to 9426 conditions per place. [2023-11-24 22:06:31,792 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 86 selfloop transitions, 21 changer transitions 38/209 dead transitions. [2023-11-24 22:06:31,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 209 transitions, 2395 flow [2023-11-24 22:06:31,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:06:31,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:06:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 272 transitions. [2023-11-24 22:06:31,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2023-11-24 22:06:31,795 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 272 transitions. [2023-11-24 22:06:31,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 272 transitions. [2023-11-24 22:06:31,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:31,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 272 transitions. [2023-11-24 22:06:31,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 34.0) internal successors, (272), 8 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) [2023-11-24 22:06:31,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:31,798 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:31,798 INFO L175 Difference]: Start difference. First operand has 111 places, 114 transitions, 1145 flow. Second operand 8 states and 272 transitions. [2023-11-24 22:06:31,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 209 transitions, 2395 flow [2023-11-24 22:06:33,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 209 transitions, 2077 flow, removed 69 selfloop flow, removed 12 redundant places. [2023-11-24 22:06:33,720 INFO L231 Difference]: Finished difference. Result has 109 places, 133 transitions, 1272 flow [2023-11-24 22:06:33,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1272, PETRI_PLACES=109, PETRI_TRANSITIONS=133} [2023-11-24 22:06:33,722 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 48 predicate places. [2023-11-24 22:06:33,722 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 133 transitions, 1272 flow [2023-11-24 22:06:33,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.5) internal successors, (275), 10 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:33,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:33,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:33,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 22:06:33,723 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:33,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash 771342091, now seen corresponding path program 2 times [2023-11-24 22:06:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169881889] [2023-11-24 22:06:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:34,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:34,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169881889] [2023-11-24 22:06:34,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169881889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:34,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:34,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:06:34,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856550348] [2023-11-24 22:06:34,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:34,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 22:06:34,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:34,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 22:06:34,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:06:34,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 56 [2023-11-24 22:06:34,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 133 transitions, 1272 flow. Second operand has 10 states, 10 states have (on average 28.5) internal successors, (285), 10 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:34,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:34,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 56 [2023-11-24 22:06:34,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:40,766 INFO L124 PetriNetUnfolderBase]: 17737/33140 cut-off events. [2023-11-24 22:06:40,766 INFO L125 PetriNetUnfolderBase]: For 129951/136025 co-relation queries the response was YES. [2023-11-24 22:06:40,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122964 conditions, 33140 events. 17737/33140 cut-off events. For 129951/136025 co-relation queries the response was YES. Maximal size of possible extension queue 2353. Compared 344502 event pairs, 8238 based on Foata normal form. 1103/32291 useless extension candidates. Maximal degree in co-relation 122918. Up to 16568 conditions per place. [2023-11-24 22:06:41,060 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 102 selfloop transitions, 29 changer transitions 40/235 dead transitions. [2023-11-24 22:06:41,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 235 transitions, 2579 flow [2023-11-24 22:06:41,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:06:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:06:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 316 transitions. [2023-11-24 22:06:41,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2023-11-24 22:06:41,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 316 transitions. [2023-11-24 22:06:41,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 316 transitions. [2023-11-24 22:06:41,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:41,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 316 transitions. [2023-11-24 22:06:41,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:41,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:41,072 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:41,072 INFO L175 Difference]: Start difference. First operand has 109 places, 133 transitions, 1272 flow. Second operand 9 states and 316 transitions. [2023-11-24 22:06:41,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 235 transitions, 2579 flow [2023-11-24 22:06:43,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 235 transitions, 2545 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-24 22:06:43,787 INFO L231 Difference]: Finished difference. Result has 122 places, 151 transitions, 1572 flow [2023-11-24 22:06:43,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1572, PETRI_PLACES=122, PETRI_TRANSITIONS=151} [2023-11-24 22:06:43,788 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 61 predicate places. [2023-11-24 22:06:43,789 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 151 transitions, 1572 flow [2023-11-24 22:06:43,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.5) internal successors, (285), 10 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:43,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:43,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:43,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 22:06:43,790 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:43,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:43,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1028243893, now seen corresponding path program 3 times [2023-11-24 22:06:43,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:43,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727212482] [2023-11-24 22:06:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:43,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:44,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:44,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727212482] [2023-11-24 22:06:44,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727212482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:44,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:44,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:06:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388341090] [2023-11-24 22:06:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:44,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 22:06:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 22:06:44,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:06:44,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 56 [2023-11-24 22:06:44,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 151 transitions, 1572 flow. Second operand has 10 states, 10 states have (on average 27.5) internal successors, (275), 10 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:44,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:44,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 56 [2023-11-24 22:06:44,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:06:50,994 INFO L124 PetriNetUnfolderBase]: 17029/32453 cut-off events. [2023-11-24 22:06:50,994 INFO L125 PetriNetUnfolderBase]: For 179963/185792 co-relation queries the response was YES. [2023-11-24 22:06:51,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136202 conditions, 32453 events. 17029/32453 cut-off events. For 179963/185792 co-relation queries the response was YES. Maximal size of possible extension queue 2235. Compared 342085 event pairs, 8376 based on Foata normal form. 1035/31587 useless extension candidates. Maximal degree in co-relation 136149. Up to 21071 conditions per place. [2023-11-24 22:06:51,293 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 65 selfloop transitions, 45 changer transitions 34/203 dead transitions. [2023-11-24 22:06:51,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 203 transitions, 2433 flow [2023-11-24 22:06:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:06:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:06:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 263 transitions. [2023-11-24 22:06:51,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5870535714285714 [2023-11-24 22:06:51,295 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 263 transitions. [2023-11-24 22:06:51,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 263 transitions. [2023-11-24 22:06:51,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:06:51,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 263 transitions. [2023-11-24 22:06:51,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.875) internal successors, (263), 8 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:51,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:51,299 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:51,300 INFO L175 Difference]: Start difference. First operand has 122 places, 151 transitions, 1572 flow. Second operand 8 states and 263 transitions. [2023-11-24 22:06:51,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 203 transitions, 2433 flow [2023-11-24 22:06:54,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 203 transitions, 2382 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-11-24 22:06:54,062 INFO L231 Difference]: Finished difference. Result has 126 places, 142 transitions, 1527 flow [2023-11-24 22:06:54,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1527, PETRI_PLACES=126, PETRI_TRANSITIONS=142} [2023-11-24 22:06:54,063 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 65 predicate places. [2023-11-24 22:06:54,063 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 142 transitions, 1527 flow [2023-11-24 22:06:54,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.5) internal successors, (275), 10 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:54,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:06:54,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:06:54,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 22:06:54,064 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:06:54,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:06:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash 575603058, now seen corresponding path program 1 times [2023-11-24 22:06:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:06:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182602418] [2023-11-24 22:06:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:06:54,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:06:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:06:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:06:54,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:06:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182602418] [2023-11-24 22:06:54,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182602418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:06:54,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:06:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:06:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214083603] [2023-11-24 22:06:54,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:06:54,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:06:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:06:54,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:06:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:06:54,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 56 [2023-11-24 22:06:54,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 142 transitions, 1527 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:06:54,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:06:54,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 56 [2023-11-24 22:06:54,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand