./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx --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 a233f90faab2ceb8ddfb042463870c03c0794d3cd45b2ba20de731314559cb95 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:57:39,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:57:40,053 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 20:57:40,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:57:40,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:57:40,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:57:40,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:57:40,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:57:40,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:57:40,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:57:40,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:57:40,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:57:40,112 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:57:40,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:57:40,115 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:57:40,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:57:40,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:57:40,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:57:40,117 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 20:57:40,117 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 20:57:40,118 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 20:57:40,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:57:40,119 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 20:57:40,120 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:57:40,121 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:57:40,121 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:57:40,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:57:40,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:57:40,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:57:40,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:57:40,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:57:40,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:57:40,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:57:40,126 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:57:40,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:57:40,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:57:40,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:57:40,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:57:40,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:57:40,128 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_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a233f90faab2ceb8ddfb042463870c03c0794d3cd45b2ba20de731314559cb95 [2023-11-21 20:57:40,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:57:40,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:57:40,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:57:40,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:57:40,466 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:57:40,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2023-11-21 20:57:43,668 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:57:43,968 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:57:43,973 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/sv-benchmarks/c/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2023-11-21 20:57:43,999 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/data/05de5560c/d22230657755464eb89b6b4c7a4e66a1/FLAG9d4e47b2c [2023-11-21 20:57:44,019 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/data/05de5560c/d22230657755464eb89b6b4c7a4e66a1 [2023-11-21 20:57:44,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:57:44,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:57:44,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:57:44,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:57:44,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:57:44,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69940157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44, skipping insertion in model container [2023-11-21 20:57:44,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:57:44,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:57:44,552 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:57:44,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:57:44,697 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:57:44,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44 WrapperNode [2023-11-21 20:57:44,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:57:44,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:57:44,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:57:44,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:57:44,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,780 INFO L138 Inliner]: procedures = 163, calls = 49, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 88 [2023-11-21 20:57:44,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:57:44,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:57:44,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:57:44,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:57:44,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:57:44,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:57:44,818 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:57:44,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:57:44,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (1/1) ... [2023-11-21 20:57:44,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:57:44,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:44,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:44,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:57:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 20:57:44,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 20:57:44,906 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 20:57:44,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:57:44,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:57:44,907 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 20:57:44,908 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 20:57:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:57:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 20:57:44,908 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 20:57:44,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:57:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:57:44,911 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 20:57:45,058 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:57:45,061 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:57:45,330 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:57:45,554 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:57:45,554 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 20:57:45,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:57:45 BoogieIcfgContainer [2023-11-21 20:57:45,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:57:45,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:57:45,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:57:45,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:57:45,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:57:44" (1/3) ... [2023-11-21 20:57:45,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e82a8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:57:45, skipping insertion in model container [2023-11-21 20:57:45,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:44" (2/3) ... [2023-11-21 20:57:45,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e82a8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:57:45, skipping insertion in model container [2023-11-21 20:57:45,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:57:45" (3/3) ... [2023-11-21 20:57:45,566 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2023-11-21 20:57:45,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:57:45,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-21 20:57:45,586 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 20:57:45,626 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 20:57:45,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 63 transitions, 133 flow [2023-11-21 20:57:45,701 INFO L124 PetriNetUnfolderBase]: 4/62 cut-off events. [2023-11-21 20:57:45,701 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 20:57:45,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 62 events. 4/62 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-21 20:57:45,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 63 transitions, 133 flow [2023-11-21 20:57:45,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 61 transitions, 128 flow [2023-11-21 20:57:45,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:57:45,729 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;@2a74f496, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:57:45,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-21 20:57:45,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 20:57:45,734 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 20:57:45,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 20:57:45,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:45,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 20:57:45,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-11-21 20:57:45,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash 10273, now seen corresponding path program 1 times [2023-11-21 20:57:45,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:45,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537078071] [2023-11-21 20:57:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:46,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:46,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537078071] [2023-11-21 20:57:46,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537078071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:46,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:46,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:57:46,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487559466] [2023-11-21 20:57:46,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:46,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:57:46,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:46,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:57:46,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:57:46,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 63 [2023-11-21 20:57:46,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:46,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 63 [2023-11-21 20:57:46,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:46,336 INFO L124 PetriNetUnfolderBase]: 176/522 cut-off events. [2023-11-21 20:57:46,337 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 20:57:46,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 522 events. 176/522 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2602 event pairs, 176 based on Foata normal form. 48/563 useless extension candidates. Maximal degree in co-relation 894. Up to 383 conditions per place. [2023-11-21 20:57:46,349 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 30 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-21 20:57:46,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 176 flow [2023-11-21 20:57:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:57:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:57:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2023-11-21 20:57:46,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502645502645502 [2023-11-21 20:57:46,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 104 transitions. [2023-11-21 20:57:46,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 104 transitions. [2023-11-21 20:57:46,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:46,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 104 transitions. [2023-11-21 20:57:46,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,391 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 128 flow. Second operand 3 states and 104 transitions. [2023-11-21 20:57:46,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 176 flow [2023-11-21 20:57:46,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:57:46,404 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 112 flow [2023-11-21 20:57:46,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-11-21 20:57:46,412 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2023-11-21 20:57:46,412 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 112 flow [2023-11-21 20:57:46,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:46,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 20:57:46,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 20:57:46,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-11-21 20:57:46,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:46,417 INFO L85 PathProgramCache]: Analyzing trace with hash 10274, now seen corresponding path program 1 times [2023-11-21 20:57:46,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:46,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627292516] [2023-11-21 20:57:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:46,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:46,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627292516] [2023-11-21 20:57:46,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627292516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:46,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:46,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:57:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142849419] [2023-11-21 20:57:46,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:46,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:57:46,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:57:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:57:46,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 63 [2023-11-21 20:57:46,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:46,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 63 [2023-11-21 20:57:46,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:46,735 INFO L124 PetriNetUnfolderBase]: 165/498 cut-off events. [2023-11-21 20:57:46,735 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 20:57:46,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 498 events. 165/498 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2473 event pairs, 165 based on Foata normal form. 13/504 useless extension candidates. Maximal degree in co-relation 854. Up to 359 conditions per place. [2023-11-21 20:57:46,740 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 28 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-21 20:57:46,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 168 flow [2023-11-21 20:57:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:57:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:57:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2023-11-21 20:57:46,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502645502645502 [2023-11-21 20:57:46,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 104 transitions. [2023-11-21 20:57:46,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 104 transitions. [2023-11-21 20:57:46,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:46,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 104 transitions. [2023-11-21 20:57:46,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,746 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 112 flow. Second operand 3 states and 104 transitions. [2023-11-21 20:57:46,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 168 flow [2023-11-21 20:57:46,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:57:46,749 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 108 flow [2023-11-21 20:57:46,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-11-21 20:57:46,750 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2023-11-21 20:57:46,750 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 108 flow [2023-11-21 20:57:46,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:46,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:46,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:46,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 20:57:46,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-11-21 20:57:46,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1686735854, now seen corresponding path program 1 times [2023-11-21 20:57:46,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:46,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881681512] [2023-11-21 20:57:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:46,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:46,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881681512] [2023-11-21 20:57:46,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881681512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:46,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:46,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:57:46,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248318788] [2023-11-21 20:57:46,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:46,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:57:46,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:57:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:57:46,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 63 [2023-11-21 20:57:46,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2023-11-21 20:57:46,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:46,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 63 [2023-11-21 20:57:46,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:47,084 INFO L124 PetriNetUnfolderBase]: 193/524 cut-off events. [2023-11-21 20:57:47,084 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 20:57:47,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 524 events. 193/524 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2545 event pairs, 96 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 940. Up to 229 conditions per place. [2023-11-21 20:57:47,088 INFO L140 encePairwiseOnDemand]: 52/63 looper letters, 49 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2023-11-21 20:57:47,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 83 transitions, 300 flow [2023-11-21 20:57:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 20:57:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 20:57:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2023-11-21 20:57:47,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5968253968253968 [2023-11-21 20:57:47,092 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 188 transitions. [2023-11-21 20:57:47,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 188 transitions. [2023-11-21 20:57:47,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:47,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 188 transitions. [2023-11-21 20:57:47,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,096 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,096 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 108 flow. Second operand 5 states and 188 transitions. [2023-11-21 20:57:47,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 83 transitions, 300 flow [2023-11-21 20:57:47,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 83 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:57:47,100 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 204 flow [2023-11-21 20:57:47,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-11-21 20:57:47,101 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2023-11-21 20:57:47,102 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 204 flow [2023-11-21 20:57:47,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 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) [2023-11-21 20:57:47,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:47,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:47,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 20:57:47,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-11-21 20:57:47,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:47,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2067128083, now seen corresponding path program 1 times [2023-11-21 20:57:47,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:47,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077010384] [2023-11-21 20:57:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:47,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:47,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077010384] [2023-11-21 20:57:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077010384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:47,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:47,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:57:47,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433388791] [2023-11-21 20:57:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:47,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:57:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:47,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:57:47,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:57:47,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2023-11-21 20:57:47,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:47,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2023-11-21 20:57:47,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:47,383 INFO L124 PetriNetUnfolderBase]: 148/490 cut-off events. [2023-11-21 20:57:47,383 INFO L125 PetriNetUnfolderBase]: For 171/181 co-relation queries the response was YES. [2023-11-21 20:57:47,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 490 events. 148/490 cut-off events. For 171/181 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2551 event pairs, 47 based on Foata normal form. 24/507 useless extension candidates. Maximal degree in co-relation 959. Up to 218 conditions per place. [2023-11-21 20:57:47,389 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 47 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2023-11-21 20:57:47,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 396 flow [2023-11-21 20:57:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:57:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:57:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2023-11-21 20:57:47,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2023-11-21 20:57:47,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 133 transitions. [2023-11-21 20:57:47,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 133 transitions. [2023-11-21 20:57:47,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:47,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 133 transitions. [2023-11-21 20:57:47,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,399 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 204 flow. Second operand 3 states and 133 transitions. [2023-11-21 20:57:47,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 396 flow [2023-11-21 20:57:47,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 392 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-21 20:57:47,413 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 262 flow [2023-11-21 20:57:47,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2023-11-21 20:57:47,415 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-11-21 20:57:47,416 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 262 flow [2023-11-21 20:57:47,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:47,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:47,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 20:57:47,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-11-21 20:57:47,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:47,418 INFO L85 PathProgramCache]: Analyzing trace with hash -199939342, now seen corresponding path program 1 times [2023-11-21 20:57:47,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:47,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80291922] [2023-11-21 20:57:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:47,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80291922] [2023-11-21 20:57:47,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80291922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:47,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:47,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:57:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590963216] [2023-11-21 20:57:47,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:57:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:57:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:57:47,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2023-11-21 20:57:47,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:47,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2023-11-21 20:57:47,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:47,884 INFO L124 PetriNetUnfolderBase]: 142/492 cut-off events. [2023-11-21 20:57:47,884 INFO L125 PetriNetUnfolderBase]: For 353/363 co-relation queries the response was YES. [2023-11-21 20:57:47,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 492 events. 142/492 cut-off events. For 353/363 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2586 event pairs, 54 based on Foata normal form. 6/494 useless extension candidates. Maximal degree in co-relation 1181. Up to 193 conditions per place. [2023-11-21 20:57:47,890 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 57 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2023-11-21 20:57:47,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 496 flow [2023-11-21 20:57:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:57:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 20:57:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2023-11-21 20:57:47,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2023-11-21 20:57:47,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 158 transitions. [2023-11-21 20:57:47,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 158 transitions. [2023-11-21 20:57:47,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:47,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 158 transitions. [2023-11-21 20:57:47,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,895 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,896 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 262 flow. Second operand 4 states and 158 transitions. [2023-11-21 20:57:47,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 496 flow [2023-11-21 20:57:47,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 474 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-21 20:57:47,902 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 286 flow [2023-11-21 20:57:47,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-11-21 20:57:47,903 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-11-21 20:57:47,904 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 286 flow [2023-11-21 20:57:47,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:47,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:47,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:47,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 20:57:47,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-11-21 20:57:47,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:47,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1492676882, now seen corresponding path program 1 times [2023-11-21 20:57:47,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:47,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721452168] [2023-11-21 20:57:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:48,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:48,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721452168] [2023-11-21 20:57:48,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721452168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:48,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:48,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:57:48,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508318255] [2023-11-21 20:57:48,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:48,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:57:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:57:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:57:48,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2023-11-21 20:57:48,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:48,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2023-11-21 20:57:48,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:48,327 INFO L124 PetriNetUnfolderBase]: 95/353 cut-off events. [2023-11-21 20:57:48,328 INFO L125 PetriNetUnfolderBase]: For 284/287 co-relation queries the response was YES. [2023-11-21 20:57:48,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 353 events. 95/353 cut-off events. For 284/287 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1625 event pairs, 35 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 963. Up to 144 conditions per place. [2023-11-21 20:57:48,332 INFO L140 encePairwiseOnDemand]: 52/63 looper letters, 44 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2023-11-21 20:57:48,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 457 flow [2023-11-21 20:57:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:57:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 20:57:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2023-11-21 20:57:48,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2023-11-21 20:57:48,334 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 154 transitions. [2023-11-21 20:57:48,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 154 transitions. [2023-11-21 20:57:48,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:48,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 154 transitions. [2023-11-21 20:57:48,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,337 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,338 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 286 flow. Second operand 4 states and 154 transitions. [2023-11-21 20:57:48,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 457 flow [2023-11-21 20:57:48,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 450 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-21 20:57:48,343 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 321 flow [2023-11-21 20:57:48,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-11-21 20:57:48,344 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2023-11-21 20:57:48,345 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 321 flow [2023-11-21 20:57:48,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:48,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:48,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 20:57:48,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-11-21 20:57:48,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:48,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1353853519, now seen corresponding path program 1 times [2023-11-21 20:57:48,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:48,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579788863] [2023-11-21 20:57:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:48,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:48,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:48,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579788863] [2023-11-21 20:57:48,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579788863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:48,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:48,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:57:48,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862894319] [2023-11-21 20:57:48,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:48,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:57:48,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:48,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:57:48,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:57:48,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 63 [2023-11-21 20:57:48,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:48,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 63 [2023-11-21 20:57:48,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:48,722 INFO L124 PetriNetUnfolderBase]: 52/229 cut-off events. [2023-11-21 20:57:48,723 INFO L125 PetriNetUnfolderBase]: For 347/355 co-relation queries the response was YES. [2023-11-21 20:57:48,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 229 events. 52/229 cut-off events. For 347/355 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 774 event pairs, 17 based on Foata normal form. 15/243 useless extension candidates. Maximal degree in co-relation 244. Up to 93 conditions per place. [2023-11-21 20:57:48,725 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 36 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2023-11-21 20:57:48,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 394 flow [2023-11-21 20:57:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:57:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 20:57:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2023-11-21 20:57:48,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2023-11-21 20:57:48,727 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 142 transitions. [2023-11-21 20:57:48,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 142 transitions. [2023-11-21 20:57:48,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:48,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 142 transitions. [2023-11-21 20:57:48,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,730 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,730 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 321 flow. Second operand 4 states and 142 transitions. [2023-11-21 20:57:48,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 394 flow [2023-11-21 20:57:48,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 351 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-21 20:57:48,734 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 238 flow [2023-11-21 20:57:48,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-21 20:57:48,736 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-21 20:57:48,736 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 238 flow [2023-11-21 20:57:48,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:48,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:57:48,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:48,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 20:57:48,737 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2023-11-21 20:57:48,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:48,738 INFO L85 PathProgramCache]: Analyzing trace with hash 972797424, now seen corresponding path program 1 times [2023-11-21 20:57:48,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:48,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765664723] [2023-11-21 20:57:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:48,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:57:49,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:49,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765664723] [2023-11-21 20:57:49,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765664723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:49,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:49,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:57:49,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447884283] [2023-11-21 20:57:49,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:49,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:57:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:57:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:57:49,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 63 [2023-11-21 20:57:49,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:49,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:57:49,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 63 [2023-11-21 20:57:49,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:57:49,141 INFO L124 PetriNetUnfolderBase]: 52/221 cut-off events. [2023-11-21 20:57:49,142 INFO L125 PetriNetUnfolderBase]: For 308/315 co-relation queries the response was YES. [2023-11-21 20:57:49,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 221 events. 52/221 cut-off events. For 308/315 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 745 event pairs, 41 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 215. Up to 166 conditions per place. [2023-11-21 20:57:49,144 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2023-11-21 20:57:49,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 308 flow [2023-11-21 20:57:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:57:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 20:57:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2023-11-21 20:57:49,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2023-11-21 20:57:49,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 129 transitions. [2023-11-21 20:57:49,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 129 transitions. [2023-11-21 20:57:49,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:57:49,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 129 transitions. [2023-11-21 20:57:49,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:49,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:49,149 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:49,149 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 238 flow. Second operand 4 states and 129 transitions. [2023-11-21 20:57:49,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 308 flow [2023-11-21 20:57:49,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:57:49,152 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-11-21 20:57:49,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-11-21 20:57:49,156 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-21 20:57:49,156 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-11-21 20:57:49,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:57:49,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-11-21 20:57:49,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-21 20:57:49,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2023-11-21 20:57:49,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2023-11-21 20:57:49,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-21 20:57:49,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2023-11-21 20:57:49,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2023-11-21 20:57:49,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-21 20:57:49,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 20:57:49,163 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:49,169 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 20:57:49,169 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 20:57:49,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 08:57:49 BasicIcfg [2023-11-21 20:57:49,184 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 20:57:49,184 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 20:57:49,185 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 20:57:49,185 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 20:57:49,185 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:57:45" (3/4) ... [2023-11-21 20:57:49,188 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 20:57:49,193 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-21 20:57:49,201 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-11-21 20:57:49,201 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-21 20:57:49,202 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 20:57:49,202 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-21 20:57:49,308 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 20:57:49,308 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 20:57:49,309 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 20:57:49,309 INFO L158 Benchmark]: Toolchain (without parser) took 5280.47ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 94.7MB in the beginning and 104.0MB in the end (delta: -9.4MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2023-11-21 20:57:49,310 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:57:49,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 667.34ms. Allocated memory is still 138.4MB. Free memory was 94.2MB in the beginning and 74.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 20:57:49,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.38ms. Allocated memory is still 138.4MB. Free memory was 74.7MB in the beginning and 72.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:57:49,311 INFO L158 Benchmark]: Boogie Preprocessor took 34.95ms. Allocated memory is still 138.4MB. Free memory was 72.7MB in the beginning and 71.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:57:49,311 INFO L158 Benchmark]: RCFGBuilder took 739.25ms. Allocated memory is still 138.4MB. Free memory was 70.6MB in the beginning and 91.6MB in the end (delta: -21.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-21 20:57:49,312 INFO L158 Benchmark]: TraceAbstraction took 3625.18ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 90.8MB in the beginning and 109.3MB in the end (delta: -18.5MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2023-11-21 20:57:49,312 INFO L158 Benchmark]: Witness Printer took 124.34ms. Allocated memory is still 172.0MB. Free memory was 109.3MB in the beginning and 104.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 20:57:49,314 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 667.34ms. Allocated memory is still 138.4MB. Free memory was 94.2MB in the beginning and 74.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.38ms. Allocated memory is still 138.4MB. Free memory was 74.7MB in the beginning and 72.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.95ms. Allocated memory is still 138.4MB. Free memory was 72.7MB in the beginning and 71.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 739.25ms. Allocated memory is still 138.4MB. Free memory was 70.6MB in the beginning and 91.6MB in the end (delta: -21.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3625.18ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 90.8MB in the beginning and 109.3MB in the end (delta: -18.5MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Witness Printer took 124.34ms. Allocated memory is still 172.0MB. Free memory was 109.3MB in the beginning and 104.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 698]: 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 3 procedures, 79 locations, 8 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: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 266 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 229 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 546 IncrementalHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 11 mSDtfsCounter, 546 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=321occurred in iteration=6, InterpolantAutomatonStates: 30, 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, 1.4s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 959 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 20:57:49,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_711d64ac-a87a-4e8b-b5b8-f125fdb94cf0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE