./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya --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 6d67b26c9d6dbfd265b32dfe97063f0b6065a61c5709b8120357b3eaad40bf46 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:10:04,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:10:04,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:10:04,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:10:04,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:10:04,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:10:04,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:10:04,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:10:04,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:10:04,665 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:10:04,666 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:10:04,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:10:04,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:10:04,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:10:04,668 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:10:04,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:10:04,669 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:10:04,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:10:04,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:10:04,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:10:04,671 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:10:04,672 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:10:04,672 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:10:04,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:10:04,673 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:10:04,673 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:10:04,673 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:10:04,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:10:04,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:10:04,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:10:04,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:10:04,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:10:04,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:10:04,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:10:04,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:10:04,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:10:04,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:10:04,677 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:10:04,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:10:04,677 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:10:04,677 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:10:04,677 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_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d67b26c9d6dbfd265b32dfe97063f0b6065a61c5709b8120357b3eaad40bf46 [2023-11-29 04:10:04,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:10:04,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:10:04,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:10:04,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:10:04,940 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:10:04,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-29 04:10:07,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:10:07,958 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:10:07,959 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/sv-benchmarks/c/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-29 04:10:07,972 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/data/1ffd6a4b9/57313928834a494790bdac13c172157b/FLAG58e4a2f28 [2023-11-29 04:10:08,304 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/data/1ffd6a4b9/57313928834a494790bdac13c172157b [2023-11-29 04:10:08,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:10:08,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:10:08,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:10:08,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:10:08,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:10:08,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad87c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08, skipping insertion in model container [2023-11-29 04:10:08,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,366 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:10:08,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:10:08,680 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:10:08,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:10:08,759 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:10:08,759 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:10:08,767 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:10:08,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08 WrapperNode [2023-11-29 04:10:08,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:10:08,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:10:08,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:10:08,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:10:08,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,816 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-29 04:10:08,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:10:08,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:10:08,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:10:08,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:10:08,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,848 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 04:10:08,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:10:08,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:10:08,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:10:08,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:10:08,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (1/1) ... [2023-11-29 04:10:08,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:10:08,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:08,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:10:08,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:10:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:10:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:10:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:10:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:10:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:10:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:10:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:10:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:10:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 04:10:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 04:10:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 04:10:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 04:10:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-29 04:10:08,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-29 04:10:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:10:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:10:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:10:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:10:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:10:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:10:08,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:10:08,938 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:10:09,074 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:10:09,076 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:10:09,249 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:10:09,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:10:09,357 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:10:09,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:09 BoogieIcfgContainer [2023-11-29 04:10:09,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:10:09,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:10:09,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:10:09,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:10:09,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:10:08" (1/3) ... [2023-11-29 04:10:09,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4474e033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:09, skipping insertion in model container [2023-11-29 04:10:09,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:08" (2/3) ... [2023-11-29 04:10:09,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4474e033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:09, skipping insertion in model container [2023-11-29 04:10:09,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:09" (3/3) ... [2023-11-29 04:10:09,366 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-29 04:10:09,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:10:09,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 04:10:09,390 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:10:09,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 04:10:09,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 52 transitions, 116 flow [2023-11-29 04:10:09,501 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2023-11-29 04:10:09,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:10:09,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-11-29 04:10:09,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 52 transitions, 116 flow [2023-11-29 04:10:09,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 48 transitions, 105 flow [2023-11-29 04:10:09,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:10:09,527 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;@4ba1b5e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:10:09,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 04:10:09,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:10:09,530 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 04:10:09,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:10:09,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:09,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:10:09,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:09,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:09,537 INFO L85 PathProgramCache]: Analyzing trace with hash 7433, now seen corresponding path program 1 times [2023-11-29 04:10:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:09,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611052577] [2023-11-29 04:10:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:09,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:09,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:09,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611052577] [2023-11-29 04:10:09,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611052577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:09,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:09,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:10:09,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347184731] [2023-11-29 04:10:09,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:09,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:09,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:09,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:09,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-29 04:10:09,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:09,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:09,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-29 04:10:09,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:09,946 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2023-11-29 04:10:09,947 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 04:10:09,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 247 events. 75/247 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1346 event pairs, 63 based on Foata normal form. 16/234 useless extension candidates. Maximal degree in co-relation 389. Up to 117 conditions per place. [2023-11-29 04:10:09,952 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-29 04:10:09,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 139 flow [2023-11-29 04:10:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:10:09,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-29 04:10:09,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-29 04:10:09,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-29 04:10:09,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-29 04:10:09,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:09,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-29 04:10:09,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:09,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:09,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:09,974 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 105 flow. Second operand 3 states and 117 transitions. [2023-11-29 04:10:09,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 139 flow [2023-11-29 04:10:09,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:10:09,979 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-29 04:10:09,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-29 04:10:09,984 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-29 04:10:09,985 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-29 04:10:09,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:09,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:09,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 04:10:09,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:10:09,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:09,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash 7434, now seen corresponding path program 1 times [2023-11-29 04:10:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:09,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119162059] [2023-11-29 04:10:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:10,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119162059] [2023-11-29 04:10:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119162059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:10,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:10,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:10:10,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923978127] [2023-11-29 04:10:10,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:10,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:10,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-29 04:10:10,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:10,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-29 04:10:10,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:10,192 INFO L124 PetriNetUnfolderBase]: 75/246 cut-off events. [2023-11-29 04:10:10,192 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 04:10:10,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 246 events. 75/246 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1342 event pairs, 63 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 397. Up to 116 conditions per place. [2023-11-29 04:10:10,196 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-29 04:10:10,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 136 flow [2023-11-29 04:10:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:10:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-29 04:10:10,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-29 04:10:10,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-29 04:10:10,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-29 04:10:10,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:10,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-29 04:10:10,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,202 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 117 transitions. [2023-11-29 04:10:10,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 136 flow [2023-11-29 04:10:10,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:10,205 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-29 04:10:10,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-29 04:10:10,206 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-29 04:10:10,206 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-29 04:10:10,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:10,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:10:10,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:10:10,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:10,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash 221648202, now seen corresponding path program 1 times [2023-11-29 04:10:10,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:10,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567149345] [2023-11-29 04:10:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:10,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:10,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:10,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567149345] [2023-11-29 04:10:10,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567149345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:10,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:10,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:10:10,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358001576] [2023-11-29 04:10:10,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:10,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:10,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:10,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-29 04:10:10,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:10,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-29 04:10:10,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:10,355 INFO L124 PetriNetUnfolderBase]: 76/244 cut-off events. [2023-11-29 04:10:10,356 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 04:10:10,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 244 events. 76/244 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1312 event pairs, 63 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 398. Up to 116 conditions per place. [2023-11-29 04:10:10,359 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-29 04:10:10,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 136 flow [2023-11-29 04:10:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:10:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-29 04:10:10,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-29 04:10:10,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-29 04:10:10,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-29 04:10:10,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:10,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-29 04:10:10,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,364 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 115 transitions. [2023-11-29 04:10:10,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 136 flow [2023-11-29 04:10:10,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:10,366 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-29 04:10:10,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-29 04:10:10,367 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-29 04:10:10,368 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-29 04:10:10,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:10,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:10:10,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:10:10,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:10,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash 221648203, now seen corresponding path program 1 times [2023-11-29 04:10:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:10,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053777042] [2023-11-29 04:10:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:10,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:10,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053777042] [2023-11-29 04:10:10,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053777042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:10,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:10,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:10:10,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250555786] [2023-11-29 04:10:10,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:10,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:10,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:10,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-29 04:10:10,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:10,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-29 04:10:10,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:10,527 INFO L124 PetriNetUnfolderBase]: 75/242 cut-off events. [2023-11-29 04:10:10,527 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:10:10,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 242 events. 75/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1348 event pairs, 42 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 395. Up to 113 conditions per place. [2023-11-29 04:10:10,530 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-29 04:10:10,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 132 flow [2023-11-29 04:10:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:10:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-29 04:10:10,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-29 04:10:10,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-29 04:10:10,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-29 04:10:10,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:10,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-29 04:10:10,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,534 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 117 transitions. [2023-11-29 04:10:10,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 132 flow [2023-11-29 04:10:10,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:10,536 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-29 04:10:10,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-29 04:10:10,537 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-29 04:10:10,538 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-29 04:10:10,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:10,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:10,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:10:10,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:10,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:10,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1757061700, now seen corresponding path program 1 times [2023-11-29 04:10:10,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:10,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425474447] [2023-11-29 04:10:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:10,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:10,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:10,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425474447] [2023-11-29 04:10:10,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425474447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:10,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:10,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:10:10,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506234577] [2023-11-29 04:10:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:10,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:10,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:10,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:10,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:10,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 52 [2023-11-29 04:10:10,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:10,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 52 [2023-11-29 04:10:10,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:10,687 INFO L124 PetriNetUnfolderBase]: 79/242 cut-off events. [2023-11-29 04:10:10,687 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 04:10:10,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 242 events. 79/242 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1303 event pairs, 27 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 403. Up to 112 conditions per place. [2023-11-29 04:10:10,689 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 16 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-29 04:10:10,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 132 flow [2023-11-29 04:10:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:10:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-29 04:10:10,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2023-11-29 04:10:10,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-29 04:10:10,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-29 04:10:10,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:10,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-29 04:10:10,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,693 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 115 transitions. [2023-11-29 04:10:10,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 132 flow [2023-11-29 04:10:10,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:10,695 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-29 04:10:10,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-29 04:10:10,696 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-29 04:10:10,697 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-29 04:10:10,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:10,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:10,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:10:10,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:10,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:10,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1757061701, now seen corresponding path program 1 times [2023-11-29 04:10:10,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:10,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424911608] [2023-11-29 04:10:10,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:10,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:10,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:10,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424911608] [2023-11-29 04:10:10,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424911608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:10,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:10,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:10:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613048228] [2023-11-29 04:10:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:10,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:10,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 52 [2023-11-29 04:10:10,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:10,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 52 [2023-11-29 04:10:10,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:10,841 INFO L124 PetriNetUnfolderBase]: 75/234 cut-off events. [2023-11-29 04:10:10,841 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 04:10:10,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 234 events. 75/234 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1248 event pairs, 27 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 389. Up to 104 conditions per place. [2023-11-29 04:10:10,843 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 15 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-29 04:10:10,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 128 flow [2023-11-29 04:10:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:10:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-29 04:10:10,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-29 04:10:10,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-29 04:10:10,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-29 04:10:10,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:10,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-29 04:10:10,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,847 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 3 states and 117 transitions. [2023-11-29 04:10:10,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 128 flow [2023-11-29 04:10:10,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:10,849 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 88 flow [2023-11-29 04:10:10,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-29 04:10:10,850 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-11-29 04:10:10,850 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 88 flow [2023-11-29 04:10:10,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:10,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:10,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:10,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:10:10,851 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:10,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:10,851 INFO L85 PathProgramCache]: Analyzing trace with hash -395415043, now seen corresponding path program 1 times [2023-11-29 04:10:10,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:10,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122296510] [2023-11-29 04:10:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:10,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:11,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:11,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122296510] [2023-11-29 04:10:11,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122296510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:11,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:11,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:10:11,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693277695] [2023-11-29 04:10:11,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:11,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:10:11,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:11,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:10:11,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:10:11,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-29 04:10:11,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 88 flow. Second operand has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:11,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-29 04:10:11,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:11,665 INFO L124 PetriNetUnfolderBase]: 120/313 cut-off events. [2023-11-29 04:10:11,665 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 04:10:11,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 313 events. 120/313 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1780 event pairs, 10 based on Foata normal form. 12/315 useless extension candidates. Maximal degree in co-relation 543. Up to 112 conditions per place. [2023-11-29 04:10:11,667 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 21 selfloop transitions, 4 changer transitions 6/52 dead transitions. [2023-11-29 04:10:11,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 178 flow [2023-11-29 04:10:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:10:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:10:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2023-11-29 04:10:11,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648351648351648 [2023-11-29 04:10:11,670 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 242 transitions. [2023-11-29 04:10:11,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 242 transitions. [2023-11-29 04:10:11,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:11,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 242 transitions. [2023-11-29 04:10:11,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,673 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,674 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 88 flow. Second operand 7 states and 242 transitions. [2023-11-29 04:10:11,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 178 flow [2023-11-29 04:10:11,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:11,676 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 88 flow [2023-11-29 04:10:11,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-11-29 04:10:11,677 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-29 04:10:11,677 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 88 flow [2023-11-29 04:10:11,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:11,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:11,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:10:11,678 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:11,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash -395413506, now seen corresponding path program 1 times [2023-11-29 04:10:11,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:11,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179202166] [2023-11-29 04:10:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:11,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179202166] [2023-11-29 04:10:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179202166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:11,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:11,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:10:11,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056602860] [2023-11-29 04:10:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:11,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:11,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:11,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-29 04:10:11,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:11,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:11,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-29 04:10:11,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:12,211 INFO L124 PetriNetUnfolderBase]: 1409/2697 cut-off events. [2023-11-29 04:10:12,211 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2023-11-29 04:10:12,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5086 conditions, 2697 events. 1409/2697 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 19952 event pairs, 311 based on Foata normal form. 0/2574 useless extension candidates. Maximal degree in co-relation 5075. Up to 812 conditions per place. [2023-11-29 04:10:12,223 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 29 selfloop transitions, 6 changer transitions 55/107 dead transitions. [2023-11-29 04:10:12,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 107 transitions, 430 flow [2023-11-29 04:10:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:10:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:10:12,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 335 transitions. [2023-11-29 04:10:12,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7158119658119658 [2023-11-29 04:10:12,225 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 335 transitions. [2023-11-29 04:10:12,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 335 transitions. [2023-11-29 04:10:12,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:12,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 335 transitions. [2023-11-29 04:10:12,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 37.22222222222222) internal successors, (335), 9 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,228 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,228 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 88 flow. Second operand 9 states and 335 transitions. [2023-11-29 04:10:12,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 107 transitions, 430 flow [2023-11-29 04:10:12,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 412 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:10:12,231 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 164 flow [2023-11-29 04:10:12,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2023-11-29 04:10:12,232 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-11-29 04:10:12,232 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 164 flow [2023-11-29 04:10:12,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:12,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:12,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:10:12,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:12,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:12,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1206725375, now seen corresponding path program 1 times [2023-11-29 04:10:12,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:12,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552816562] [2023-11-29 04:10:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:12,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:12,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552816562] [2023-11-29 04:10:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552816562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:12,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:12,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:10:12,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28552858] [2023-11-29 04:10:12,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:12,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:10:12,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:12,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:10:12,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:10:12,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-29 04:10:12,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:12,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-29 04:10:12,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:12,753 INFO L124 PetriNetUnfolderBase]: 912/1920 cut-off events. [2023-11-29 04:10:12,753 INFO L125 PetriNetUnfolderBase]: For 2936/2952 co-relation queries the response was YES. [2023-11-29 04:10:12,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5466 conditions, 1920 events. 912/1920 cut-off events. For 2936/2952 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14134 event pairs, 122 based on Foata normal form. 82/1971 useless extension candidates. Maximal degree in co-relation 5447. Up to 592 conditions per place. [2023-11-29 04:10:12,765 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 37 selfloop transitions, 9 changer transitions 52/115 dead transitions. [2023-11-29 04:10:12,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 790 flow [2023-11-29 04:10:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:10:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:10:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 358 transitions. [2023-11-29 04:10:12,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884615384615385 [2023-11-29 04:10:12,768 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 358 transitions. [2023-11-29 04:10:12,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 358 transitions. [2023-11-29 04:10:12,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:12,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 358 transitions. [2023-11-29 04:10:12,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 35.8) internal successors, (358), 10 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,771 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,771 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 164 flow. Second operand 10 states and 358 transitions. [2023-11-29 04:10:12,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 790 flow [2023-11-29 04:10:12,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 115 transitions, 684 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-11-29 04:10:12,788 INFO L231 Difference]: Finished difference. Result has 68 places, 46 transitions, 235 flow [2023-11-29 04:10:12,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=235, PETRI_PLACES=68, PETRI_TRANSITIONS=46} [2023-11-29 04:10:12,789 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-11-29 04:10:12,789 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 46 transitions, 235 flow [2023-11-29 04:10:12,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:12,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:12,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:10:12,790 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:12,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:12,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1421110541, now seen corresponding path program 1 times [2023-11-29 04:10:12,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:12,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086844671] [2023-11-29 04:10:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:12,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:12,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:12,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086844671] [2023-11-29 04:10:12,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086844671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:12,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:12,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:10:12,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204551930] [2023-11-29 04:10:12,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:12,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:10:12,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:10:12,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:10:12,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-29 04:10:12,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 46 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:12,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:12,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-29 04:10:12,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:13,264 INFO L124 PetriNetUnfolderBase]: 717/1490 cut-off events. [2023-11-29 04:10:13,264 INFO L125 PetriNetUnfolderBase]: For 3743/3747 co-relation queries the response was YES. [2023-11-29 04:10:13,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 1490 events. 717/1490 cut-off events. For 3743/3747 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10241 event pairs, 191 based on Foata normal form. 36/1495 useless extension candidates. Maximal degree in co-relation 4635. Up to 542 conditions per place. [2023-11-29 04:10:13,275 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 45 selfloop transitions, 11 changer transitions 32/105 dead transitions. [2023-11-29 04:10:13,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 729 flow [2023-11-29 04:10:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:10:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:10:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 347 transitions. [2023-11-29 04:10:13,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6673076923076923 [2023-11-29 04:10:13,277 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 347 transitions. [2023-11-29 04:10:13,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 347 transitions. [2023-11-29 04:10:13,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:13,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 347 transitions. [2023-11-29 04:10:13,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.7) internal successors, (347), 10 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,280 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,280 INFO L175 Difference]: Start difference. First operand has 68 places, 46 transitions, 235 flow. Second operand 10 states and 347 transitions. [2023-11-29 04:10:13,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 729 flow [2023-11-29 04:10:13,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 667 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-11-29 04:10:13,290 INFO L231 Difference]: Finished difference. Result has 77 places, 52 transitions, 334 flow [2023-11-29 04:10:13,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=334, PETRI_PLACES=77, PETRI_TRANSITIONS=52} [2023-11-29 04:10:13,291 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-11-29 04:10:13,292 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 52 transitions, 334 flow [2023-11-29 04:10:13,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:13,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:13,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:10:13,292 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:13,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:13,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1345262954, now seen corresponding path program 1 times [2023-11-29 04:10:13,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:13,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109582963] [2023-11-29 04:10:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:13,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:13,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109582963] [2023-11-29 04:10:13,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109582963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:13,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:13,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:10:13,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076756483] [2023-11-29 04:10:13,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:13,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:13,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 52 [2023-11-29 04:10:13,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 52 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:13,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 52 [2023-11-29 04:10:13,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:13,615 INFO L124 PetriNetUnfolderBase]: 390/957 cut-off events. [2023-11-29 04:10:13,616 INFO L125 PetriNetUnfolderBase]: For 2002/2035 co-relation queries the response was YES. [2023-11-29 04:10:13,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2927 conditions, 957 events. 390/957 cut-off events. For 2002/2035 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6600 event pairs, 105 based on Foata normal form. 27/923 useless extension candidates. Maximal degree in co-relation 2893. Up to 442 conditions per place. [2023-11-29 04:10:13,624 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 19 selfloop transitions, 4 changer transitions 15/73 dead transitions. [2023-11-29 04:10:13,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 488 flow [2023-11-29 04:10:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:10:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:10:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2023-11-29 04:10:13,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-29 04:10:13,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 255 transitions. [2023-11-29 04:10:13,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 255 transitions. [2023-11-29 04:10:13,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:13,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 255 transitions. [2023-11-29 04:10:13,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.42857142857143) internal successors, (255), 7 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,628 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,628 INFO L175 Difference]: Start difference. First operand has 77 places, 52 transitions, 334 flow. Second operand 7 states and 255 transitions. [2023-11-29 04:10:13,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 488 flow [2023-11-29 04:10:13,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 442 flow, removed 21 selfloop flow, removed 10 redundant places. [2023-11-29 04:10:13,637 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 322 flow [2023-11-29 04:10:13,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-11-29 04:10:13,638 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-11-29 04:10:13,638 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 322 flow [2023-11-29 04:10:13,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:13,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:13,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:10:13,638 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:13,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:13,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1125757134, now seen corresponding path program 1 times [2023-11-29 04:10:13,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:13,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065309224] [2023-11-29 04:10:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:13,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:13,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065309224] [2023-11-29 04:10:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065309224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:13,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:13,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:10:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436743457] [2023-11-29 04:10:13,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:13,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:10:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:13,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:10:13,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:10:13,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 52 [2023-11-29 04:10:13,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:13,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:13,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 52 [2023-11-29 04:10:13,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:14,053 INFO L124 PetriNetUnfolderBase]: 603/1367 cut-off events. [2023-11-29 04:10:14,053 INFO L125 PetriNetUnfolderBase]: For 2776/2821 co-relation queries the response was YES. [2023-11-29 04:10:14,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4025 conditions, 1367 events. 603/1367 cut-off events. For 2776/2821 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9990 event pairs, 137 based on Foata normal form. 52/1365 useless extension candidates. Maximal degree in co-relation 3994. Up to 358 conditions per place. [2023-11-29 04:10:14,062 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 28 selfloop transitions, 6 changer transitions 37/94 dead transitions. [2023-11-29 04:10:14,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 636 flow [2023-11-29 04:10:14,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:10:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:10:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 322 transitions. [2023-11-29 04:10:14,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.688034188034188 [2023-11-29 04:10:14,064 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 322 transitions. [2023-11-29 04:10:14,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 322 transitions. [2023-11-29 04:10:14,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:14,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 322 transitions. [2023-11-29 04:10:14,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.77777777777778) internal successors, (322), 9 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,067 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,067 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 322 flow. Second operand 9 states and 322 transitions. [2023-11-29 04:10:14,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 636 flow [2023-11-29 04:10:14,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 600 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-29 04:10:14,076 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 282 flow [2023-11-29 04:10:14,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=282, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2023-11-29 04:10:14,077 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-11-29 04:10:14,077 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 282 flow [2023-11-29 04:10:14,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:14,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:14,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:10:14,078 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:14,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash 380787947, now seen corresponding path program 1 times [2023-11-29 04:10:14,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:14,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588863681] [2023-11-29 04:10:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:14,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588863681] [2023-11-29 04:10:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588863681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:14,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:14,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:10:14,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059145213] [2023-11-29 04:10:14,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:14,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:10:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:10:14,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:10:14,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2023-11-29 04:10:14,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:14,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2023-11-29 04:10:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:14,442 INFO L124 PetriNetUnfolderBase]: 507/1212 cut-off events. [2023-11-29 04:10:14,442 INFO L125 PetriNetUnfolderBase]: For 2027/2053 co-relation queries the response was YES. [2023-11-29 04:10:14,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 1212 events. 507/1212 cut-off events. For 2027/2053 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8938 event pairs, 129 based on Foata normal form. 30/1162 useless extension candidates. Maximal degree in co-relation 3238. Up to 284 conditions per place. [2023-11-29 04:10:14,450 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 26 selfloop transitions, 4 changer transitions 24/81 dead transitions. [2023-11-29 04:10:14,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 506 flow [2023-11-29 04:10:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:10:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:10:14,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 290 transitions. [2023-11-29 04:10:14,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6971153846153846 [2023-11-29 04:10:14,452 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 290 transitions. [2023-11-29 04:10:14,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 290 transitions. [2023-11-29 04:10:14,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:14,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 290 transitions. [2023-11-29 04:10:14,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.25) internal successors, (290), 8 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,454 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,454 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 282 flow. Second operand 8 states and 290 transitions. [2023-11-29 04:10:14,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 506 flow [2023-11-29 04:10:14,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 447 flow, removed 20 selfloop flow, removed 9 redundant places. [2023-11-29 04:10:14,461 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 235 flow [2023-11-29 04:10:14,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=235, PETRI_PLACES=72, PETRI_TRANSITIONS=44} [2023-11-29 04:10:14,462 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-11-29 04:10:14,462 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 235 flow [2023-11-29 04:10:14,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:14,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:14,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:10:14,463 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:14,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2124645905, now seen corresponding path program 1 times [2023-11-29 04:10:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:14,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187783160] [2023-11-29 04:10:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:14,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:14,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:14,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187783160] [2023-11-29 04:10:14,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187783160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:14,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:14,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:10:14,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720387607] [2023-11-29 04:10:14,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:14,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:10:14,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:14,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:10:14,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:10:14,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-29 04:10:14,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 44 transitions, 235 flow. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:14,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-29 04:10:14,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:14,833 INFO L124 PetriNetUnfolderBase]: 398/877 cut-off events. [2023-11-29 04:10:14,833 INFO L125 PetriNetUnfolderBase]: For 1685/1693 co-relation queries the response was YES. [2023-11-29 04:10:14,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 877 events. 398/877 cut-off events. For 1685/1693 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5561 event pairs, 88 based on Foata normal form. 28/880 useless extension candidates. Maximal degree in co-relation 2541. Up to 298 conditions per place. [2023-11-29 04:10:14,837 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 28 selfloop transitions, 4 changer transitions 22/71 dead transitions. [2023-11-29 04:10:14,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 455 flow [2023-11-29 04:10:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:10:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:10:14,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 239 transitions. [2023-11-29 04:10:14,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6565934065934066 [2023-11-29 04:10:14,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 239 transitions. [2023-11-29 04:10:14,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 239 transitions. [2023-11-29 04:10:14,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:14,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 239 transitions. [2023-11-29 04:10:14,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,842 INFO L175 Difference]: Start difference. First operand has 72 places, 44 transitions, 235 flow. Second operand 7 states and 239 transitions. [2023-11-29 04:10:14,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 455 flow [2023-11-29 04:10:14,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 379 flow, removed 21 selfloop flow, removed 13 redundant places. [2023-11-29 04:10:14,847 INFO L231 Difference]: Finished difference. Result has 64 places, 36 transitions, 133 flow [2023-11-29 04:10:14,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=64, PETRI_TRANSITIONS=36} [2023-11-29 04:10:14,847 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2023-11-29 04:10:14,847 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 36 transitions, 133 flow [2023-11-29 04:10:14,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:14,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:14,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:14,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:10:14,848 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 04:10:14,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash -738952509, now seen corresponding path program 1 times [2023-11-29 04:10:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:14,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195940585] [2023-11-29 04:10:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:14,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:14,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:14,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195940585] [2023-11-29 04:10:14,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195940585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:14,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:14,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:10:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249968513] [2023-11-29 04:10:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:14,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:10:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:10:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:10:15,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 52 [2023-11-29 04:10:15,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 36 transitions, 133 flow. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:15,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 52 [2023-11-29 04:10:15,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:15,107 INFO L124 PetriNetUnfolderBase]: 135/314 cut-off events. [2023-11-29 04:10:15,107 INFO L125 PetriNetUnfolderBase]: For 325/329 co-relation queries the response was YES. [2023-11-29 04:10:15,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 314 events. 135/314 cut-off events. For 325/329 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1471 event pairs, 43 based on Foata normal form. 12/318 useless extension candidates. Maximal degree in co-relation 815. Up to 142 conditions per place. [2023-11-29 04:10:15,108 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-11-29 04:10:15,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 44 transitions, 207 flow [2023-11-29 04:10:15,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:10:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:10:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2023-11-29 04:10:15,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2023-11-29 04:10:15,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2023-11-29 04:10:15,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2023-11-29 04:10:15,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:15,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2023-11-29 04:10:15,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,112 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,112 INFO L175 Difference]: Start difference. First operand has 64 places, 36 transitions, 133 flow. Second operand 6 states and 192 transitions. [2023-11-29 04:10:15,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 44 transitions, 207 flow [2023-11-29 04:10:15,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 169 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-11-29 04:10:15,114 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-11-29 04:10:15,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-11-29 04:10:15,114 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-29 04:10:15,115 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-11-29 04:10:15,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:15,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-29 04:10:15,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-29 04:10:15,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-29 04:10:15,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-29 04:10:15,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-29 04:10:15,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-29 04:10:15,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-29 04:10:15,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-29 04:10:15,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-29 04:10:15,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-29 04:10:15,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-29 04:10:15,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:10:15,119 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:15,122 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:10:15,122 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:10:15,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:10:15 BasicIcfg [2023-11-29 04:10:15,127 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:10:15,127 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:10:15,128 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:10:15,128 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:10:15,128 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:09" (3/4) ... [2023-11-29 04:10:15,130 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:10:15,133 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-29 04:10:15,133 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-29 04:10:15,133 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-29 04:10:15,137 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-11-29 04:10:15,137 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-29 04:10:15,137 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 04:10:15,138 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 04:10:15,203 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:10:15,203 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:10:15,204 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:10:15,204 INFO L158 Benchmark]: Toolchain (without parser) took 6897.37ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 110.5MB in the beginning and 93.8MB in the end (delta: 16.8MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. [2023-11-29 04:10:15,205 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 134.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:10:15,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.38ms. Allocated memory is still 151.0MB. Free memory was 110.0MB in the beginning and 89.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 04:10:15,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.82ms. Allocated memory is still 151.0MB. Free memory was 89.6MB in the beginning and 87.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:10:15,206 INFO L158 Benchmark]: Boogie Preprocessor took 49.59ms. Allocated memory is still 151.0MB. Free memory was 87.4MB in the beginning and 85.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:10:15,206 INFO L158 Benchmark]: RCFGBuilder took 490.13ms. Allocated memory is still 151.0MB. Free memory was 85.4MB in the beginning and 119.5MB in the end (delta: -34.1MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2023-11-29 04:10:15,207 INFO L158 Benchmark]: TraceAbstraction took 5766.85ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 118.8MB in the beginning and 99.0MB in the end (delta: 19.8MB). Peak memory consumption was 95.5MB. Max. memory is 16.1GB. [2023-11-29 04:10:15,207 INFO L158 Benchmark]: Witness Printer took 76.21ms. Allocated memory is still 226.5MB. Free memory was 99.0MB in the beginning and 93.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:10:15,208 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 134.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.38ms. Allocated memory is still 151.0MB. Free memory was 110.0MB in the beginning and 89.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.82ms. Allocated memory is still 151.0MB. Free memory was 89.6MB in the beginning and 87.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.59ms. Allocated memory is still 151.0MB. Free memory was 87.4MB in the beginning and 85.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 490.13ms. Allocated memory is still 151.0MB. Free memory was 85.4MB in the beginning and 119.5MB in the end (delta: -34.1MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5766.85ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 118.8MB in the beginning and 99.0MB in the end (delta: 19.8MB). Peak memory consumption was 95.5MB. Max. memory is 16.1GB. * Witness Printer took 76.21ms. Allocated memory is still 226.5MB. Free memory was 99.0MB in the beginning and 93.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 75 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.7s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 626 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 502 mSDsluCounter, 262 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 187 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1530 IncrementalHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 75 mSDtfsCounter, 1530 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=334occurred in iteration=10, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 1289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 04:10:15,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e10771a-3864-47e0-a60a-1e86ad71bc9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE