./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a 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_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU --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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:14:57,641 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:14:57,745 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:14:57,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:14:57,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:14:57,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:14:57,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:14:57,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:14:57,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:14:57,798 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:14:57,799 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:14:57,799 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:14:57,800 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:14:57,800 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:14:57,801 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:14:57,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:14:57,804 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:14:57,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:14:57,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:14:57,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:14:57,805 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:14:57,806 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:14:57,807 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:14:57,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:14:57,811 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:14:57,812 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:14:57,812 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:14:57,812 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:14:57,813 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:14:57,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:14:57,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:14:57,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:14:57,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:14:57,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:57,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:14:57,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:14:57,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:14:57,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:14:57,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:14:57,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:14:57,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:14:57,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:14:57,820 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_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2024-10-31 22:14:58,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:14:58,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:14:58,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:14:58,175 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:14:58,176 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:14:58,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i Unable to find full path for "g++" [2024-10-31 22:15:00,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:15:00,777 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:15:00,778 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-10-31 22:15:00,795 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/data/445693ba5/e4f9417bf8a14dfaabbab31a37ab17c3/FLAG9ee1f81fb [2024-10-31 22:15:01,061 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/data/445693ba5/e4f9417bf8a14dfaabbab31a37ab17c3 [2024-10-31 22:15:01,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:15:01,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:15:01,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:01,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:15:01,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:15:01,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@270266aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01, skipping insertion in model container [2024-10-31 22:15:01,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,132 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:15:01,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:01,628 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:15:01,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:01,755 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:15:01,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01 WrapperNode [2024-10-31 22:15:01,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:01,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:01,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:15:01,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:15:01,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,823 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 145 [2024-10-31 22:15:01,824 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:01,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:15:01,825 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:15:01,825 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:15:01,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,872 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-10-31 22:15:01,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:15:01,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:15:01,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:15:01,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:15:01,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (1/1) ... [2024-10-31 22:15:01,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:01,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:01,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:15:01,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5f5108c-036a-4e9e-93cf-7c02386081fa/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:15:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-31 22:15:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-31 22:15:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:15:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:15:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-10-31 22:15:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-10-31 22:15:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:15:02,006 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:15:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:15:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:15:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:15:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:15:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:15:02,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:15:02,010 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:15:02,212 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:15:02,219 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:15:02,829 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:15:02,829 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:15:03,245 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:15:03,246 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:15:03,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:03 BoogieIcfgContainer [2024-10-31 22:15:03,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:15:03,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:15:03,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:15:03,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:15:03,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:15:01" (1/3) ... [2024-10-31 22:15:03,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d91af64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:03, skipping insertion in model container [2024-10-31 22:15:03,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:01" (2/3) ... [2024-10-31 22:15:03,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d91af64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:03, skipping insertion in model container [2024-10-31 22:15:03,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:03" (3/3) ... [2024-10-31 22:15:03,262 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-10-31 22:15:03,303 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:15:03,304 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-31 22:15:03,304 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:15:03,385 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:15:03,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 176 flow [2024-10-31 22:15:03,513 INFO L124 PetriNetUnfolderBase]: 9/79 cut-off events. [2024-10-31 22:15:03,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:03,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 9/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 194 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-10-31 22:15:03,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 176 flow [2024-10-31 22:15:03,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 79 transitions, 167 flow [2024-10-31 22:15:03,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:03,554 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@53411cbb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:03,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-31 22:15:03,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:03,594 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2024-10-31 22:15:03,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:03,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:03,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:03,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-31 22:15:03,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:03,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1880598954, now seen corresponding path program 1 times [2024-10-31 22:15:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:03,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650884366] [2024-10-31 22:15:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:03,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:04,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:04,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650884366] [2024-10-31 22:15:04,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650884366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:04,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:04,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:15:04,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250079353] [2024-10-31 22:15:04,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:04,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:15:04,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:04,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:15:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:15:04,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 82 [2024-10-31 22:15:04,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:04,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:04,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 82 [2024-10-31 22:15:04,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:13,513 INFO L124 PetriNetUnfolderBase]: 43763/66795 cut-off events. [2024-10-31 22:15:13,513 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-10-31 22:15:13,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127894 conditions, 66795 events. 43763/66795 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1642. Compared 519114 event pairs, 10183 based on Foata normal form. 9296/75411 useless extension candidates. Maximal degree in co-relation 127883. Up to 16083 conditions per place. [2024-10-31 22:15:13,988 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 218 selfloop transitions, 11 changer transitions 0/250 dead transitions. [2024-10-31 22:15:13,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 250 transitions, 988 flow [2024-10-31 22:15:13,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:15:13,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:15:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2024-10-31 22:15:14,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711890243902439 [2024-10-31 22:15:14,014 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 167 flow. Second operand 8 states and 467 transitions. [2024-10-31 22:15:14,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 250 transitions, 988 flow [2024-10-31 22:15:14,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 250 transitions, 978 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:15:14,031 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 201 flow [2024-10-31 22:15:14,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=201, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-10-31 22:15:14,038 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2024-10-31 22:15:14,039 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 201 flow [2024-10-31 22:15:14,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:14,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:14,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:14,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:15:14,040 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-31 22:15:14,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:14,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1634123195, now seen corresponding path program 1 times [2024-10-31 22:15:14,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:14,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793877463] [2024-10-31 22:15:14,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:14,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:14,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793877463] [2024-10-31 22:15:14,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793877463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:14,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:14,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:15:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495256078] [2024-10-31 22:15:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:14,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:15:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:14,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:15:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:15:14,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 82 [2024-10-31 22:15:14,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:14,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:14,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 82 [2024-10-31 22:15:14,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:24,117 INFO L124 PetriNetUnfolderBase]: 58899/92217 cut-off events. [2024-10-31 22:15:24,118 INFO L125 PetriNetUnfolderBase]: For 17605/17605 co-relation queries the response was YES. [2024-10-31 22:15:24,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194647 conditions, 92217 events. 58899/92217 cut-off events. For 17605/17605 co-relation queries the response was YES. Maximal size of possible extension queue 2503. Compared 771975 event pairs, 12885 based on Foata normal form. 0/90733 useless extension candidates. Maximal degree in co-relation 194633. Up to 35145 conditions per place. [2024-10-31 22:15:24,962 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 205 selfloop transitions, 19 changer transitions 0/245 dead transitions. [2024-10-31 22:15:24,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 245 transitions, 1128 flow [2024-10-31 22:15:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:15:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:15:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 384 transitions. [2024-10-31 22:15:24,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-10-31 22:15:24,965 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 201 flow. Second operand 8 states and 384 transitions. [2024-10-31 22:15:24,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 245 transitions, 1128 flow [2024-10-31 22:15:28,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 245 transitions, 1128 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:28,959 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 310 flow [2024-10-31 22:15:28,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=310, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-10-31 22:15:28,961 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 15 predicate places. [2024-10-31 22:15:28,961 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 310 flow [2024-10-31 22:15:28,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:28,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:28,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:28,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:15:28,963 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2024-10-31 22:15:28,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2104850499, now seen corresponding path program 1 times [2024-10-31 22:15:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083802617] [2024-10-31 22:15:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:28,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:29,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:29,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083802617] [2024-10-31 22:15:29,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083802617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:29,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:29,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:15:29,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307753882] [2024-10-31 22:15:29,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:29,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:15:29,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:15:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:15:29,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 82 [2024-10-31 22:15:29,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:29,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:29,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 82 [2024-10-31 22:15:29,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand