./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix005_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix005_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c22ca6d642b28badc1dc02a5cc527ddbb1f35b5d6d2e3ba3e8f314e81f0fd465 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:36,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:36,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:35:36,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:36,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:36,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:36,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:36,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:36,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:36,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:36,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:36,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:36,875 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:36,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:36,876 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:36,877 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:36,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:36,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:36,878 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:35:36,882 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:35:36,882 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:35:36,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:36,884 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:35:36,884 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:35:36,885 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:36,885 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:36,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:36,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:36,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:36,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:36,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:36,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:36,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:36,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:36,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:36,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:36,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:36,892 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:36,892 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_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22ca6d642b28badc1dc02a5cc527ddbb1f35b5d6d2e3ba3e8f314e81f0fd465 [2023-11-19 07:35:37,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:37,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:37,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:37,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:37,305 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:37,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix005_tso.oepc.i [2023-11-19 07:35:40,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:40,954 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:40,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/sv-benchmarks/c/pthread-wmm/mix005_tso.oepc.i [2023-11-19 07:35:40,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/data/96ee9b0a3/a275973484df4793af87b1bed4fd5e79/FLAGb67f7c356 [2023-11-19 07:35:40,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/data/96ee9b0a3/a275973484df4793af87b1bed4fd5e79 [2023-11-19 07:35:40,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:40,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:41,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:41,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:41,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:41,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:40" (1/1) ... [2023-11-19 07:35:41,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24da9e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41, skipping insertion in model container [2023-11-19 07:35:41,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:40" (1/1) ... [2023-11-19 07:35:41,106 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:41,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:41,613 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:41,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:41,802 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:35:41,802 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:35:41,811 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:41,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41 WrapperNode [2023-11-19 07:35:41,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:41,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:41,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:41,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:41,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:41,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:41,911 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 168 [2023-11-19 07:35:41,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:41,912 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:41,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:41,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:41,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:41,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:41,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:41,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:41,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:41,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:41,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:42,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:42,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:42,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:42,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:42,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:42,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (1/1) ... [2023-11-19 07:35:42,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:42,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:42,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:42,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_537da84e-adc7-4444-9faa-b5c18560a0bd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:35:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:35:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:35:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:35:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:35:42,114 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:35:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:35:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:35:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:35:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:35:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:35:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:42,120 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:35:42,334 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:42,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:42,820 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:43,070 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:43,076 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:35:43,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:43 BoogieIcfgContainer [2023-11-19 07:35:43,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:43,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:43,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:43,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:43,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:40" (1/3) ... [2023-11-19 07:35:43,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13402fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:43, skipping insertion in model container [2023-11-19 07:35:43,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41" (2/3) ... [2023-11-19 07:35:43,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13402fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:43, skipping insertion in model container [2023-11-19 07:35:43,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:43" (3/3) ... [2023-11-19 07:35:43,095 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005_tso.oepc.i [2023-11-19 07:35:43,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:43,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:35:43,116 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:43,185 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:35:43,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 154 transitions, 324 flow [2023-11-19 07:35:43,349 INFO L124 PetriNetUnfolderBase]: 4/150 cut-off events. [2023-11-19 07:35:43,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:43,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 4/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 126 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:35:43,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 154 transitions, 324 flow [2023-11-19 07:35:43,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 150 transitions, 312 flow [2023-11-19 07:35:43,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:43,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 150 transitions, 312 flow [2023-11-19 07:35:43,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 150 transitions, 312 flow [2023-11-19 07:35:43,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 150 transitions, 312 flow [2023-11-19 07:35:43,427 INFO L124 PetriNetUnfolderBase]: 4/150 cut-off events. [2023-11-19 07:35:43,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:43,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 4/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 126 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:35:43,434 INFO L119 LiptonReduction]: Number of co-enabled transitions 4364 [2023-11-19 07:35:52,135 INFO L134 LiptonReduction]: Checked pairs total: 12016 [2023-11-19 07:35:52,136 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-11-19 07:35:52,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:52,161 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;@1ed4583, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:52,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:35:52,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:52,164 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:35:52,164 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:52,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:52,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:35:52,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:52,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:52,172 INFO L85 PathProgramCache]: Analyzing trace with hash 671, now seen corresponding path program 1 times [2023-11-19 07:35:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:52,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736127944] [2023-11-19 07:35:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:52,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:52,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736127944] [2023-11-19 07:35:52,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736127944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:52,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:52,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:35:52,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706168062] [2023-11-19 07:35:52,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:52,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:35:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:35:52,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:35:52,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 305 [2023-11-19 07:35:52,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 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) [2023-11-19 07:35:52,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:52,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 305 [2023-11-19 07:35:52,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:54,735 INFO L124 PetriNetUnfolderBase]: 5973/8413 cut-off events. [2023-11-19 07:35:54,736 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-19 07:35:54,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16731 conditions, 8413 events. 5973/8413 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 46306 event pairs, 5973 based on Foata normal form. 0/6983 useless extension candidates. Maximal degree in co-relation 16719. Up to 8103 conditions per place. [2023-11-19 07:35:54,825 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 26 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-19 07:35:54,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 128 flow [2023-11-19 07:35:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:35:54,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:35:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2023-11-19 07:35:54,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065573770491804 [2023-11-19 07:35:54,847 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2023-11-19 07:35:54,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2023-11-19 07:35:54,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:54,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2023-11-19 07:35:54,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,868 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,870 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 309 transitions. [2023-11-19 07:35:54,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 128 flow [2023-11-19 07:35:54,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:35:54,880 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-19 07:35:54,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-19 07:35:54,888 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-19 07:35:54,888 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-19 07:35:54,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 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) [2023-11-19 07:35:54,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:54,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:35:54,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:54,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:54,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash 633737489, now seen corresponding path program 1 times [2023-11-19 07:35:54,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:54,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786398920] [2023-11-19 07:35:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:54,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:55,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:55,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:55,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786398920] [2023-11-19 07:35:55,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786398920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:55,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:55,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:55,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659407864] [2023-11-19 07:35:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:55,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:55,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:55,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 305 [2023-11-19 07:35:55,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:55,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:55,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 305 [2023-11-19 07:35:55,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:56,828 INFO L124 PetriNetUnfolderBase]: 4695/6889 cut-off events. [2023-11-19 07:35:56,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:56,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13462 conditions, 6889 events. 4695/6889 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 41548 event pairs, 861 based on Foata normal form. 0/6280 useless extension candidates. Maximal degree in co-relation 13459. Up to 5107 conditions per place. [2023-11-19 07:35:56,892 INFO L140 encePairwiseOnDemand]: 302/305 looper letters, 39 selfloop transitions, 2 changer transitions 2/49 dead transitions. [2023-11-19 07:35:56,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 196 flow [2023-11-19 07:35:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-11-19 07:35:56,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49398907103825135 [2023-11-19 07:35:56,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-11-19 07:35:56,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-11-19 07:35:56,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:56,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-11-19 07:35:56,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:56,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:56,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:56,918 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 452 transitions. [2023-11-19 07:35:56,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 196 flow [2023-11-19 07:35:56,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:56,921 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-19 07:35:56,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-19 07:35:56,922 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-19 07:35:56,923 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-19 07:35:56,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:56,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:56,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:56,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:35:56,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:56,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1348393927, now seen corresponding path program 1 times [2023-11-19 07:35:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:56,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371858397] [2023-11-19 07:35:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:58,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:58,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371858397] [2023-11-19 07:35:58,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371858397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:58,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:58,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:58,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512756134] [2023-11-19 07:35:58,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:58,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:58,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:58,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:58,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:58,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 305 [2023-11-19 07:35:58,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:58,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:58,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 305 [2023-11-19 07:35:58,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:59,941 INFO L124 PetriNetUnfolderBase]: 4071/5797 cut-off events. [2023-11-19 07:35:59,942 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2023-11-19 07:35:59,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11932 conditions, 5797 events. 4071/5797 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 30923 event pairs, 416 based on Foata normal form. 128/5721 useless extension candidates. Maximal degree in co-relation 11928. Up to 3761 conditions per place. [2023-11-19 07:36:00,001 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 49 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-11-19 07:36:00,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 244 flow [2023-11-19 07:36:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 770 transitions. [2023-11-19 07:36:00,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207650273224044 [2023-11-19 07:36:00,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 770 transitions. [2023-11-19 07:36:00,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 770 transitions. [2023-11-19 07:36:00,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:00,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 770 transitions. [2023-11-19 07:36:00,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,021 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,021 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 6 states and 770 transitions. [2023-11-19 07:36:00,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 244 flow [2023-11-19 07:36:00,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:00,025 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 84 flow [2023-11-19 07:36:00,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-11-19 07:36:00,027 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2023-11-19 07:36:00,027 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 84 flow [2023-11-19 07:36:00,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:00,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:00,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:00,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:00,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:00,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1275216292, now seen corresponding path program 1 times [2023-11-19 07:36:00,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:00,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119718165] [2023-11-19 07:36:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:00,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:00,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:00,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119718165] [2023-11-19 07:36:00,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119718165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:00,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:00,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:00,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543635016] [2023-11-19 07:36:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:00,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:00,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:00,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:01,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 305 [2023-11-19 07:36:01,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:01,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:01,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 305 [2023-11-19 07:36:01,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:01,961 INFO L124 PetriNetUnfolderBase]: 2951/4357 cut-off events. [2023-11-19 07:36:01,961 INFO L125 PetriNetUnfolderBase]: For 319/383 co-relation queries the response was YES. [2023-11-19 07:36:01,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9145 conditions, 4357 events. 2951/4357 cut-off events. For 319/383 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 23655 event pairs, 544 based on Foata normal form. 0/4281 useless extension candidates. Maximal degree in co-relation 9140. Up to 3840 conditions per place. [2023-11-19 07:36:02,001 INFO L140 encePairwiseOnDemand]: 300/305 looper letters, 37 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-11-19 07:36:02,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 198 flow [2023-11-19 07:36:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 744 transitions. [2023-11-19 07:36:02,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065573770491803 [2023-11-19 07:36:02,012 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 744 transitions. [2023-11-19 07:36:02,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 744 transitions. [2023-11-19 07:36:02,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:02,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 744 transitions. [2023-11-19 07:36:02,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,024 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 84 flow. Second operand 6 states and 744 transitions. [2023-11-19 07:36:02,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 198 flow [2023-11-19 07:36:02,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:36:02,031 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 78 flow [2023-11-19 07:36:02,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-11-19 07:36:02,033 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-19 07:36:02,033 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 78 flow [2023-11-19 07:36:02,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:02,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:02,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:02,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:02,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1275216316, now seen corresponding path program 1 times [2023-11-19 07:36:02,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:02,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689419762] [2023-11-19 07:36:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:02,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:02,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:02,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689419762] [2023-11-19 07:36:02,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689419762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:02,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:02,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741041865] [2023-11-19 07:36:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:02,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:02,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:02,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:02,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:02,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 305 [2023-11-19 07:36:02,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:02,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 305 [2023-11-19 07:36:02,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:03,088 INFO L124 PetriNetUnfolderBase]: 3439/5103 cut-off events. [2023-11-19 07:36:03,088 INFO L125 PetriNetUnfolderBase]: For 440/488 co-relation queries the response was YES. [2023-11-19 07:36:03,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10363 conditions, 5103 events. 3439/5103 cut-off events. For 440/488 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 27986 event pairs, 1207 based on Foata normal form. 112/5161 useless extension candidates. Maximal degree in co-relation 10358. Up to 3145 conditions per place. [2023-11-19 07:36:03,131 INFO L140 encePairwiseOnDemand]: 302/305 looper letters, 35 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-19 07:36:03,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 183 flow [2023-11-19 07:36:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-19 07:36:03,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48415300546448087 [2023-11-19 07:36:03,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-19 07:36:03,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-19 07:36:03,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:03,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-19 07:36:03,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:03,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:03,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:03,142 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 78 flow. Second operand 3 states and 443 transitions. [2023-11-19 07:36:03,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 183 flow [2023-11-19 07:36:03,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:36:03,145 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 79 flow [2023-11-19 07:36:03,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-11-19 07:36:03,146 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-19 07:36:03,146 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 79 flow [2023-11-19 07:36:03,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:03,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:03,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:03,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:03,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:03,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash -965787894, now seen corresponding path program 1 times [2023-11-19 07:36:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:03,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660058245] [2023-11-19 07:36:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:03,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660058245] [2023-11-19 07:36:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660058245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:03,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:03,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:03,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049953905] [2023-11-19 07:36:03,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:03,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:03,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:03,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 305 [2023-11-19 07:36:03,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:03,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:03,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 305 [2023-11-19 07:36:03,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:04,600 INFO L124 PetriNetUnfolderBase]: 3506/4979 cut-off events. [2023-11-19 07:36:04,600 INFO L125 PetriNetUnfolderBase]: For 610/617 co-relation queries the response was YES. [2023-11-19 07:36:04,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10461 conditions, 4979 events. 3506/4979 cut-off events. For 610/617 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24662 event pairs, 1754 based on Foata normal form. 20/4954 useless extension candidates. Maximal degree in co-relation 10455. Up to 4534 conditions per place. [2023-11-19 07:36:04,642 INFO L140 encePairwiseOnDemand]: 301/305 looper letters, 38 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-11-19 07:36:04,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 203 flow [2023-11-19 07:36:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-11-19 07:36:04,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2023-11-19 07:36:04,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-11-19 07:36:04,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-11-19 07:36:04,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:04,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-11-19 07:36:04,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,652 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 79 flow. Second operand 3 states and 450 transitions. [2023-11-19 07:36:04,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 203 flow [2023-11-19 07:36:04,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:04,655 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 94 flow [2023-11-19 07:36:04,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-11-19 07:36:04,656 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-19 07:36:04,656 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 94 flow [2023-11-19 07:36:04,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:04,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:04,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:04,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:04,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:04,658 INFO L85 PathProgramCache]: Analyzing trace with hash -493300484, now seen corresponding path program 1 times [2023-11-19 07:36:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:04,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024636164] [2023-11-19 07:36:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:04,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:05,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:05,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024636164] [2023-11-19 07:36:05,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024636164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:05,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:05,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:05,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248613544] [2023-11-19 07:36:05,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:05,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:05,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:05,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:05,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:05,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 305 [2023-11-19 07:36:05,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:05,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:05,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 305 [2023-11-19 07:36:05,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:06,798 INFO L124 PetriNetUnfolderBase]: 3734/5467 cut-off events. [2023-11-19 07:36:06,798 INFO L125 PetriNetUnfolderBase]: For 1437/1453 co-relation queries the response was YES. [2023-11-19 07:36:06,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12213 conditions, 5467 events. 3734/5467 cut-off events. For 1437/1453 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 30550 event pairs, 712 based on Foata normal form. 28/5443 useless extension candidates. Maximal degree in co-relation 12206. Up to 4478 conditions per place. [2023-11-19 07:36:06,852 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 49 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2023-11-19 07:36:06,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 282 flow [2023-11-19 07:36:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 593 transitions. [2023-11-19 07:36:06,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860655737704918 [2023-11-19 07:36:06,856 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 593 transitions. [2023-11-19 07:36:06,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 593 transitions. [2023-11-19 07:36:06,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:06,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 593 transitions. [2023-11-19 07:36:06,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,865 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,865 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 94 flow. Second operand 4 states and 593 transitions. [2023-11-19 07:36:06,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 282 flow [2023-11-19 07:36:06,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:06,871 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 130 flow [2023-11-19 07:36:06,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-11-19 07:36:06,872 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-19 07:36:06,873 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 130 flow [2023-11-19 07:36:06,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:06,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:06,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:06,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:06,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:06,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:06,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1449616328, now seen corresponding path program 1 times [2023-11-19 07:36:06,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:06,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125884407] [2023-11-19 07:36:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:06,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:07,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:07,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125884407] [2023-11-19 07:36:07,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125884407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:07,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:07,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134714872] [2023-11-19 07:36:07,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:07,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:07,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:07,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 305 [2023-11-19 07:36:07,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:07,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:07,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 305 [2023-11-19 07:36:07,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:08,206 INFO L124 PetriNetUnfolderBase]: 3864/5699 cut-off events. [2023-11-19 07:36:08,206 INFO L125 PetriNetUnfolderBase]: For 3466/3663 co-relation queries the response was YES. [2023-11-19 07:36:08,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14394 conditions, 5699 events. 3864/5699 cut-off events. For 3466/3663 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 31871 event pairs, 570 based on Foata normal form. 55/5684 useless extension candidates. Maximal degree in co-relation 14386. Up to 4257 conditions per place. [2023-11-19 07:36:08,247 INFO L140 encePairwiseOnDemand]: 297/305 looper letters, 53 selfloop transitions, 9 changer transitions 0/67 dead transitions. [2023-11-19 07:36:08,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 350 flow [2023-11-19 07:36:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 598 transitions. [2023-11-19 07:36:08,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901639344262295 [2023-11-19 07:36:08,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 598 transitions. [2023-11-19 07:36:08,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 598 transitions. [2023-11-19 07:36:08,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:08,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 598 transitions. [2023-11-19 07:36:08,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,260 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,260 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 130 flow. Second operand 4 states and 598 transitions. [2023-11-19 07:36:08,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 350 flow [2023-11-19 07:36:08,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 339 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:08,266 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 169 flow [2023-11-19 07:36:08,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-19 07:36:08,267 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-11-19 07:36:08,268 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 169 flow [2023-11-19 07:36:08,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:08,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:08,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:36:08,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:08,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash 127928168, now seen corresponding path program 2 times [2023-11-19 07:36:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:08,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808965777] [2023-11-19 07:36:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:08,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:08,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808965777] [2023-11-19 07:36:08,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808965777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:08,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:08,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801488192] [2023-11-19 07:36:08,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:08,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 305 [2023-11-19 07:36:08,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:08,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 305 [2023-11-19 07:36:08,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:09,721 INFO L124 PetriNetUnfolderBase]: 3811/5609 cut-off events. [2023-11-19 07:36:09,721 INFO L125 PetriNetUnfolderBase]: For 5749/6182 co-relation queries the response was YES. [2023-11-19 07:36:09,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15724 conditions, 5609 events. 3811/5609 cut-off events. For 5749/6182 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 31181 event pairs, 561 based on Foata normal form. 102/5641 useless extension candidates. Maximal degree in co-relation 15715. Up to 4242 conditions per place. [2023-11-19 07:36:09,767 INFO L140 encePairwiseOnDemand]: 298/305 looper letters, 53 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2023-11-19 07:36:09,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 399 flow [2023-11-19 07:36:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 598 transitions. [2023-11-19 07:36:09,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901639344262295 [2023-11-19 07:36:09,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 598 transitions. [2023-11-19 07:36:09,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 598 transitions. [2023-11-19 07:36:09,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:09,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 598 transitions. [2023-11-19 07:36:09,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:09,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:09,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:09,844 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 169 flow. Second operand 4 states and 598 transitions. [2023-11-19 07:36:09,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 399 flow [2023-11-19 07:36:09,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 388 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:09,857 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 233 flow [2023-11-19 07:36:09,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-11-19 07:36:09,858 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-11-19 07:36:09,858 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 233 flow [2023-11-19 07:36:09,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:09,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:09,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:09,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:36:09,859 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:09,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:09,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2000866664, now seen corresponding path program 1 times [2023-11-19 07:36:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:09,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157261513] [2023-11-19 07:36:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:09,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:10,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:10,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157261513] [2023-11-19 07:36:10,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157261513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:10,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:10,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:10,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401499507] [2023-11-19 07:36:10,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:10,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:10,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:10,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2023-11-19 07:36:10,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:10,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:10,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2023-11-19 07:36:10,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:11,532 INFO L124 PetriNetUnfolderBase]: 3989/5851 cut-off events. [2023-11-19 07:36:11,533 INFO L125 PetriNetUnfolderBase]: For 10454/11387 co-relation queries the response was YES. [2023-11-19 07:36:11,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18163 conditions, 5851 events. 3989/5851 cut-off events. For 10454/11387 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32392 event pairs, 629 based on Foata normal form. 133/5913 useless extension candidates. Maximal degree in co-relation 18152. Up to 4342 conditions per place. [2023-11-19 07:36:11,591 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 64 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2023-11-19 07:36:11,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 529 flow [2023-11-19 07:36:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 726 transitions. [2023-11-19 07:36:11,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4760655737704918 [2023-11-19 07:36:11,597 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 726 transitions. [2023-11-19 07:36:11,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 726 transitions. [2023-11-19 07:36:11,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:11,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 726 transitions. [2023-11-19 07:36:11,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,606 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,607 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 233 flow. Second operand 5 states and 726 transitions. [2023-11-19 07:36:11,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 529 flow [2023-11-19 07:36:11,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 518 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:11,624 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 300 flow [2023-11-19 07:36:11,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-11-19 07:36:11,627 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-11-19 07:36:11,627 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 300 flow [2023-11-19 07:36:11,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:11,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:11,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:11,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:36:11,628 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:11,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1904650348, now seen corresponding path program 2 times [2023-11-19 07:36:11,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:11,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856985649] [2023-11-19 07:36:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:11,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:12,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856985649] [2023-11-19 07:36:12,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856985649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:12,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:12,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:12,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294232507] [2023-11-19 07:36:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:12,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:12,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:12,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:12,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2023-11-19 07:36:12,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:12,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:12,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2023-11-19 07:36:12,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:13,441 INFO L124 PetriNetUnfolderBase]: 4029/5911 cut-off events. [2023-11-19 07:36:13,441 INFO L125 PetriNetUnfolderBase]: For 15940/17139 co-relation queries the response was YES. [2023-11-19 07:36:13,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20422 conditions, 5911 events. 4029/5911 cut-off events. For 15940/17139 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32767 event pairs, 628 based on Foata normal form. 169/6009 useless extension candidates. Maximal degree in co-relation 20410. Up to 4366 conditions per place. [2023-11-19 07:36:13,489 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 65 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2023-11-19 07:36:13,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 616 flow [2023-11-19 07:36:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 731 transitions. [2023-11-19 07:36:13,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.479344262295082 [2023-11-19 07:36:13,495 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 731 transitions. [2023-11-19 07:36:13,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 731 transitions. [2023-11-19 07:36:13,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:13,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 731 transitions. [2023-11-19 07:36:13,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:13,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:13,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:13,507 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 300 flow. Second operand 5 states and 731 transitions. [2023-11-19 07:36:13,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 616 flow [2023-11-19 07:36:13,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 572 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:13,531 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 345 flow [2023-11-19 07:36:13,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2023-11-19 07:36:13,532 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-11-19 07:36:13,532 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 345 flow [2023-11-19 07:36:13,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:13,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:13,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:13,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:36:13,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:13,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash -328884684, now seen corresponding path program 3 times [2023-11-19 07:36:13,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:13,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465890668] [2023-11-19 07:36:13,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:13,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:14,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:14,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465890668] [2023-11-19 07:36:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465890668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:14,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:14,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:14,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265279400] [2023-11-19 07:36:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:14,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:14,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:14,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:14,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 305 [2023-11-19 07:36:14,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:14,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:14,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 305 [2023-11-19 07:36:14,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:15,537 INFO L124 PetriNetUnfolderBase]: 4537/6651 cut-off events. [2023-11-19 07:36:15,537 INFO L125 PetriNetUnfolderBase]: For 22635/24004 co-relation queries the response was YES. [2023-11-19 07:36:15,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24276 conditions, 6651 events. 4537/6651 cut-off events. For 22635/24004 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 37753 event pairs, 562 based on Foata normal form. 191/6768 useless extension candidates. Maximal degree in co-relation 24263. Up to 4246 conditions per place. [2023-11-19 07:36:15,588 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 71 selfloop transitions, 23 changer transitions 0/99 dead transitions. [2023-11-19 07:36:15,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 723 flow [2023-11-19 07:36:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 739 transitions. [2023-11-19 07:36:15,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845901639344262 [2023-11-19 07:36:15,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 739 transitions. [2023-11-19 07:36:15,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 739 transitions. [2023-11-19 07:36:15,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:15,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 739 transitions. [2023-11-19 07:36:15,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:15,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:15,603 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:15,603 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 345 flow. Second operand 5 states and 739 transitions. [2023-11-19 07:36:15,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 723 flow [2023-11-19 07:36:15,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 678 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:15,641 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 441 flow [2023-11-19 07:36:15,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2023-11-19 07:36:15,643 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2023-11-19 07:36:15,643 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 441 flow [2023-11-19 07:36:15,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:15,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:15,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:15,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:36:15,645 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:15,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash 932335112, now seen corresponding path program 4 times [2023-11-19 07:36:15,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:15,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181295446] [2023-11-19 07:36:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:15,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:16,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:16,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181295446] [2023-11-19 07:36:16,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181295446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:16,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:16,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:16,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689676930] [2023-11-19 07:36:16,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:16,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:16,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:16,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 305 [2023-11-19 07:36:16,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:16,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:16,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 305 [2023-11-19 07:36:16,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:17,851 INFO L124 PetriNetUnfolderBase]: 5064/7349 cut-off events. [2023-11-19 07:36:17,851 INFO L125 PetriNetUnfolderBase]: For 32383/34520 co-relation queries the response was YES. [2023-11-19 07:36:17,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30420 conditions, 7349 events. 5064/7349 cut-off events. For 32383/34520 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 41508 event pairs, 251 based on Foata normal form. 304/7617 useless extension candidates. Maximal degree in co-relation 30406. Up to 4646 conditions per place. [2023-11-19 07:36:17,910 INFO L140 encePairwiseOnDemand]: 297/305 looper letters, 78 selfloop transitions, 24 changer transitions 0/107 dead transitions. [2023-11-19 07:36:17,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 107 transitions, 882 flow [2023-11-19 07:36:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 876 transitions. [2023-11-19 07:36:17,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4786885245901639 [2023-11-19 07:36:17,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 876 transitions. [2023-11-19 07:36:17,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 876 transitions. [2023-11-19 07:36:17,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:17,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 876 transitions. [2023-11-19 07:36:17,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:17,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:17,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:17,934 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 441 flow. Second operand 6 states and 876 transitions. [2023-11-19 07:36:17,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 107 transitions, 882 flow [2023-11-19 07:36:18,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 107 transitions, 836 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:18,003 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 527 flow [2023-11-19 07:36:18,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=527, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-11-19 07:36:18,006 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-11-19 07:36:18,006 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 527 flow [2023-11-19 07:36:18,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:18,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:18,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:18,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:36:18,008 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:18,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:18,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1375529419, now seen corresponding path program 1 times [2023-11-19 07:36:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:18,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347035144] [2023-11-19 07:36:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:18,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:18,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:18,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347035144] [2023-11-19 07:36:18,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347035144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:18,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:18,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:18,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577346332] [2023-11-19 07:36:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:18,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:18,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:18,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 305 [2023-11-19 07:36:18,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 527 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:18,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:18,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 305 [2023-11-19 07:36:18,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:22,663 INFO L124 PetriNetUnfolderBase]: 19276/26322 cut-off events. [2023-11-19 07:36:22,664 INFO L125 PetriNetUnfolderBase]: For 141985/143532 co-relation queries the response was YES. [2023-11-19 07:36:22,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109123 conditions, 26322 events. 19276/26322 cut-off events. For 141985/143532 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 149686 event pairs, 2034 based on Foata normal form. 1129/27434 useless extension candidates. Maximal degree in co-relation 109108. Up to 13957 conditions per place. [2023-11-19 07:36:22,815 INFO L140 encePairwiseOnDemand]: 296/305 looper letters, 142 selfloop transitions, 17 changer transitions 15/177 dead transitions. [2023-11-19 07:36:22,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 177 transitions, 1708 flow [2023-11-19 07:36:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:22,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 813 transitions. [2023-11-19 07:36:22,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44426229508196724 [2023-11-19 07:36:22,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 813 transitions. [2023-11-19 07:36:22,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 813 transitions. [2023-11-19 07:36:22,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:22,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 813 transitions. [2023-11-19 07:36:22,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:22,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:22,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:22,830 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 527 flow. Second operand 6 states and 813 transitions. [2023-11-19 07:36:22,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 177 transitions, 1708 flow [2023-11-19 07:36:23,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 177 transitions, 1625 flow, removed 38 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:23,042 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 694 flow [2023-11-19 07:36:23,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2023-11-19 07:36:23,043 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2023-11-19 07:36:23,044 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 694 flow [2023-11-19 07:36:23,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:23,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:23,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:23,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:36:23,045 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:23,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:23,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1958462399, now seen corresponding path program 2 times [2023-11-19 07:36:23,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:23,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375349711] [2023-11-19 07:36:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:23,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375349711] [2023-11-19 07:36:23,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375349711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:23,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:23,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:23,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845792304] [2023-11-19 07:36:23,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:23,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:23,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:23,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:23,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:23,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 305 [2023-11-19 07:36:23,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 694 flow. Second operand has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:23,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:23,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 305 [2023-11-19 07:36:23,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand