./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:38:38,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:38:38,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:38:38,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:38:38,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:38:38,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:38:38,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:38:38,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:38:38,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:38:38,872 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:38:38,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:38:38,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:38:38,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:38:38,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:38:38,875 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:38:38,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:38:38,876 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:38:38,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:38:38,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:38:38,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:38:38,878 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:38:38,879 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:38:38,879 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:38:38,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:38:38,880 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:38:38,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:38:38,881 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:38:38,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:38:38,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:38:38,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:38:38,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:38:38,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:38:38,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:38:38,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:38:38,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:38:38,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:38:38,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:38:38,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:38:38,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:38:38,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:38:38,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:38:38,888 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_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 [2023-11-29 00:38:39,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:38:39,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:38:39,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:38:39,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:38:39,131 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:38:39,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2023-11-29 00:38:41,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:38:42,069 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:38:42,069 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/sv-benchmarks/c/weaver/test-easy11.wvr.c [2023-11-29 00:38:42,076 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/data/3dd716214/aeb511fd9435433e9f92d3ea287ce2ee/FLAGdef2a679d [2023-11-29 00:38:42,090 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/data/3dd716214/aeb511fd9435433e9f92d3ea287ce2ee [2023-11-29 00:38:42,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:38:42,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:38:42,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:38:42,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:38:42,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:38:42,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113a0736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42, skipping insertion in model container [2023-11-29 00:38:42,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:38:42,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:38:42,305 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:38:42,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:38:42,333 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:38:42,334 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:38:42,342 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:38:42,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42 WrapperNode [2023-11-29 00:38:42,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:38:42,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:38:42,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:38:42,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:38:42,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,379 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55 [2023-11-29 00:38:42,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:38:42,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:38:42,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:38:42,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:38:42,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,394 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,409 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 00:38:42,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,415 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:38:42,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:38:42,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:38:42,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:38:42,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (1/1) ... [2023-11-29 00:38:42,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:38:42,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:38:42,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:38:42,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:38:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:38:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:38:42,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:38:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:38:42,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:38:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:38:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:38:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:38:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:38:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:38:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:38:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:38:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:38:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:38:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:38:42,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:38:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:38:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:38:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:38:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:38:42,486 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:38:42,579 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:38:42,581 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:38:42,753 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:38:42,864 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:38:42,864 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:38:42,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:38:42 BoogieIcfgContainer [2023-11-29 00:38:42,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:38:42,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:38:42,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:38:42,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:38:42,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:38:42" (1/3) ... [2023-11-29 00:38:42,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c91a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:38:42, skipping insertion in model container [2023-11-29 00:38:42,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:38:42" (2/3) ... [2023-11-29 00:38:42,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c91a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:38:42, skipping insertion in model container [2023-11-29 00:38:42,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:38:42" (3/3) ... [2023-11-29 00:38:42,886 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-11-29 00:38:42,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:38:42,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 00:38:42,900 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:38:42,937 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 00:38:42,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 37 transitions, 88 flow [2023-11-29 00:38:42,992 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2023-11-29 00:38:42,992 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 00:38:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 2/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-11-29 00:38:42,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 37 transitions, 88 flow [2023-11-29 00:38:42,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 34 transitions, 80 flow [2023-11-29 00:38:43,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:38:43,017 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;@1f53bec0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:38:43,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-29 00:38:43,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:38:43,020 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 00:38:43,020 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:38:43,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:43,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:38:43,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:43,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 7908, now seen corresponding path program 1 times [2023-11-29 00:38:43,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:43,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296258430] [2023-11-29 00:38:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:43,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:43,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:43,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296258430] [2023-11-29 00:38:43,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296258430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:43,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:43,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:38:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446369562] [2023-11-29 00:38:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:43,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:38:43,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:38:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:38:43,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2023-11-29 00:38:43,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:43,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2023-11-29 00:38:43,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:43,437 INFO L124 PetriNetUnfolderBase]: 93/200 cut-off events. [2023-11-29 00:38:43,437 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 00:38:43,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 200 events. 93/200 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 643 event pairs, 66 based on Foata normal form. 1/161 useless extension candidates. Maximal degree in co-relation 321. Up to 157 conditions per place. [2023-11-29 00:38:43,443 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 17 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-11-29 00:38:43,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 108 flow [2023-11-29 00:38:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:38:43,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:38:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2023-11-29 00:38:43,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2023-11-29 00:38:43,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 66 transitions. [2023-11-29 00:38:43,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 66 transitions. [2023-11-29 00:38:43,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:43,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 66 transitions. [2023-11-29 00:38:43,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 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) [2023-11-29 00:38:43,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 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) [2023-11-29 00:38:43,468 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 80 flow. Second operand 3 states and 66 transitions. [2023-11-29 00:38:43,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 108 flow [2023-11-29 00:38:43,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 100 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:38:43,473 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 66 flow [2023-11-29 00:38:43,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-11-29 00:38:43,478 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-11-29 00:38:43,479 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 66 flow [2023-11-29 00:38:43,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:43,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:38:43,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:38:43,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:43,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash 7909, now seen corresponding path program 1 times [2023-11-29 00:38:43,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:43,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166276789] [2023-11-29 00:38:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:43,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:43,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:43,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166276789] [2023-11-29 00:38:43,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166276789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:43,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:43,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:38:43,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518597849] [2023-11-29 00:38:43,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:43,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:38:43,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:38:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:38:43,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:43,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:43,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:43,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:43,683 INFO L124 PetriNetUnfolderBase]: 61/136 cut-off events. [2023-11-29 00:38:43,683 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 00:38:43,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 136 events. 61/136 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 396 event pairs, 42 based on Foata normal form. 17/126 useless extension candidates. Maximal degree in co-relation 247. Up to 108 conditions per place. [2023-11-29 00:38:43,685 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 15 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-11-29 00:38:43,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 94 flow [2023-11-29 00:38:43,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:38:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:38:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-29 00:38:43,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2023-11-29 00:38:43,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-29 00:38:43,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-29 00:38:43,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:43,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-29 00:38:43,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 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) [2023-11-29 00:38:43,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 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) [2023-11-29 00:38:43,691 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 66 flow. Second operand 3 states and 69 transitions. [2023-11-29 00:38:43,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 94 flow [2023-11-29 00:38:43,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:38:43,693 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 63 flow [2023-11-29 00:38:43,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-11-29 00:38:43,694 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-11-29 00:38:43,694 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 63 flow [2023-11-29 00:38:43,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:43,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:38:43,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:38:43,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:43,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash 235795154, now seen corresponding path program 1 times [2023-11-29 00:38:43,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:43,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968869806] [2023-11-29 00:38:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:43,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:43,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968869806] [2023-11-29 00:38:43,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968869806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:43,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:43,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:38:43,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695438421] [2023-11-29 00:38:43,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:43,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:38:43,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:43,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:38:43,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:38:43,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2023-11-29 00:38:43,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:43,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2023-11-29 00:38:43,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:43,825 INFO L124 PetriNetUnfolderBase]: 69/146 cut-off events. [2023-11-29 00:38:43,825 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 00:38:43,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 146 events. 69/146 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 411 event pairs, 48 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 273. Up to 124 conditions per place. [2023-11-29 00:38:43,827 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 17 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-29 00:38:43,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 95 flow [2023-11-29 00:38:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:38:43,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:38:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2023-11-29 00:38:43,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2023-11-29 00:38:43,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 65 transitions. [2023-11-29 00:38:43,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 65 transitions. [2023-11-29 00:38:43,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:43,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 65 transitions. [2023-11-29 00:38:43,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 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) [2023-11-29 00:38:43,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 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) [2023-11-29 00:38:43,832 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 63 flow. Second operand 3 states and 65 transitions. [2023-11-29 00:38:43,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 95 flow [2023-11-29 00:38:43,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:38:43,834 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-29 00:38:43,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-29 00:38:43,835 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-11-29 00:38:43,835 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-29 00:38:43,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:43,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:38:43,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:38:43,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:43,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash 235795155, now seen corresponding path program 1 times [2023-11-29 00:38:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:43,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217418226] [2023-11-29 00:38:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:43,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:43,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:43,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217418226] [2023-11-29 00:38:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217418226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:43,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:43,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:38:43,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923411585] [2023-11-29 00:38:43,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:43,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:38:43,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:43,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:38:43,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:38:43,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:43,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:43,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:43,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:43,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:44,004 INFO L124 PetriNetUnfolderBase]: 61/130 cut-off events. [2023-11-29 00:38:44,005 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 00:38:44,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 130 events. 61/130 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 360 event pairs, 42 based on Foata normal form. 7/116 useless extension candidates. Maximal degree in co-relation 241. Up to 108 conditions per place. [2023-11-29 00:38:44,006 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 15 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-29 00:38:44,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 88 flow [2023-11-29 00:38:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:38:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:38:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-29 00:38:44,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2023-11-29 00:38:44,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-29 00:38:44,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-29 00:38:44,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:44,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-29 00:38:44,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:44,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 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) [2023-11-29 00:38:44,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 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) [2023-11-29 00:38:44,011 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-29 00:38:44,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 88 flow [2023-11-29 00:38:44,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 87 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:38:44,012 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 57 flow [2023-11-29 00:38:44,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-11-29 00:38:44,013 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-11-29 00:38:44,013 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 57 flow [2023-11-29 00:38:44,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:44,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:44,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:44,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:38:44,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:44,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:44,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1690303433, now seen corresponding path program 1 times [2023-11-29 00:38:44,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:44,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323306347] [2023-11-29 00:38:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:44,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:44,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323306347] [2023-11-29 00:38:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323306347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:44,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745354939] [2023-11-29 00:38:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:44,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:44,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:44,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 57 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:44,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:44,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:44,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:44,523 INFO L124 PetriNetUnfolderBase]: 111/210 cut-off events. [2023-11-29 00:38:44,523 INFO L125 PetriNetUnfolderBase]: For 7/9 co-relation queries the response was YES. [2023-11-29 00:38:44,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 210 events. 111/210 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 678 event pairs, 2 based on Foata normal form. 2/184 useless extension candidates. Maximal degree in co-relation 414. Up to 57 conditions per place. [2023-11-29 00:38:44,525 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 40 selfloop transitions, 10 changer transitions 10/66 dead transitions. [2023-11-29 00:38:44,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 66 transitions, 269 flow [2023-11-29 00:38:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2023-11-29 00:38:44,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6426426426426426 [2023-11-29 00:38:44,528 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 214 transitions. [2023-11-29 00:38:44,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 214 transitions. [2023-11-29 00:38:44,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:44,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 214 transitions. [2023-11-29 00:38:44,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.77777777777778) internal successors, (214), 9 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:44,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:44,532 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:44,532 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 57 flow. Second operand 9 states and 214 transitions. [2023-11-29 00:38:44,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 66 transitions, 269 flow [2023-11-29 00:38:44,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 66 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:38:44,535 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 121 flow [2023-11-29 00:38:44,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=121, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-11-29 00:38:44,536 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-29 00:38:44,536 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 121 flow [2023-11-29 00:38:44,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:44,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:44,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:44,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:38:44,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:44,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1620742703, now seen corresponding path program 2 times [2023-11-29 00:38:44,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:44,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216262257] [2023-11-29 00:38:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:44,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:44,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:44,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216262257] [2023-11-29 00:38:44,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216262257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:44,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:44,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:44,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616876205] [2023-11-29 00:38:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:44,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:44,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:44,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:44,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:44,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:44,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 121 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:44,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:44,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:44,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:44,996 INFO L124 PetriNetUnfolderBase]: 114/224 cut-off events. [2023-11-29 00:38:44,996 INFO L125 PetriNetUnfolderBase]: For 96/100 co-relation queries the response was YES. [2023-11-29 00:38:44,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 224 events. 114/224 cut-off events. For 96/100 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 717 event pairs, 15 based on Foata normal form. 2/214 useless extension candidates. Maximal degree in co-relation 595. Up to 115 conditions per place. [2023-11-29 00:38:44,999 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 34 selfloop transitions, 14 changer transitions 10/64 dead transitions. [2023-11-29 00:38:44,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 350 flow [2023-11-29 00:38:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2023-11-29 00:38:45,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276276276276276 [2023-11-29 00:38:45,002 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 209 transitions. [2023-11-29 00:38:45,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 209 transitions. [2023-11-29 00:38:45,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:45,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 209 transitions. [2023-11-29 00:38:45,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,005 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,005 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 121 flow. Second operand 9 states and 209 transitions. [2023-11-29 00:38:45,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 350 flow [2023-11-29 00:38:45,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 338 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 00:38:45,010 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 204 flow [2023-11-29 00:38:45,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-11-29 00:38:45,011 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2023-11-29 00:38:45,011 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 204 flow [2023-11-29 00:38:45,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:45,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:45,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:38:45,012 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:45,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:45,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1121008787, now seen corresponding path program 3 times [2023-11-29 00:38:45,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:45,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671411266] [2023-11-29 00:38:45,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:45,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:45,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671411266] [2023-11-29 00:38:45,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671411266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:45,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:45,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:45,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969653753] [2023-11-29 00:38:45,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:45,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:45,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:45,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:45,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:45,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:45,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 204 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:45,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:45,476 INFO L124 PetriNetUnfolderBase]: 120/231 cut-off events. [2023-11-29 00:38:45,476 INFO L125 PetriNetUnfolderBase]: For 209/213 co-relation queries the response was YES. [2023-11-29 00:38:45,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 231 events. 120/231 cut-off events. For 209/213 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 760 event pairs, 11 based on Foata normal form. 2/233 useless extension candidates. Maximal degree in co-relation 715. Up to 119 conditions per place. [2023-11-29 00:38:45,480 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 39 selfloop transitions, 18 changer transitions 10/73 dead transitions. [2023-11-29 00:38:45,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 471 flow [2023-11-29 00:38:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2023-11-29 00:38:45,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6396396396396397 [2023-11-29 00:38:45,482 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 213 transitions. [2023-11-29 00:38:45,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 213 transitions. [2023-11-29 00:38:45,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:45,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 213 transitions. [2023-11-29 00:38:45,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,484 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,484 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 204 flow. Second operand 9 states and 213 transitions. [2023-11-29 00:38:45,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 471 flow [2023-11-29 00:38:45,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 436 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-29 00:38:45,490 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 270 flow [2023-11-29 00:38:45,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=270, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-11-29 00:38:45,491 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2023-11-29 00:38:45,491 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 270 flow [2023-11-29 00:38:45,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:45,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:45,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:38:45,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:45,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash 155261197, now seen corresponding path program 4 times [2023-11-29 00:38:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524497263] [2023-11-29 00:38:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:45,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:45,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524497263] [2023-11-29 00:38:45,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524497263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:45,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:45,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333264024] [2023-11-29 00:38:45,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:45,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:45,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:45,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 270 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:45,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:45,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:45,939 INFO L124 PetriNetUnfolderBase]: 141/264 cut-off events. [2023-11-29 00:38:45,939 INFO L125 PetriNetUnfolderBase]: For 415/419 co-relation queries the response was YES. [2023-11-29 00:38:45,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 264 events. 141/264 cut-off events. For 415/419 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 862 event pairs, 20 based on Foata normal form. 2/265 useless extension candidates. Maximal degree in co-relation 910. Up to 129 conditions per place. [2023-11-29 00:38:45,943 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 36 selfloop transitions, 26 changer transitions 10/78 dead transitions. [2023-11-29 00:38:45,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 78 transitions, 590 flow [2023-11-29 00:38:45,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2023-11-29 00:38:45,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366366366366366 [2023-11-29 00:38:45,945 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 212 transitions. [2023-11-29 00:38:45,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 212 transitions. [2023-11-29 00:38:45,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:45,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 212 transitions. [2023-11-29 00:38:45,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,947 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,948 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 270 flow. Second operand 9 states and 212 transitions. [2023-11-29 00:38:45,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 78 transitions, 590 flow [2023-11-29 00:38:45,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 528 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 00:38:45,953 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 405 flow [2023-11-29 00:38:45,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=405, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-11-29 00:38:45,954 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2023-11-29 00:38:45,954 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 405 flow [2023-11-29 00:38:45,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:45,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:45,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:45,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:38:45,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:45,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash 492937801, now seen corresponding path program 5 times [2023-11-29 00:38:45,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:45,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047772740] [2023-11-29 00:38:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:45,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:46,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047772740] [2023-11-29 00:38:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047772740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:46,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:46,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:46,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303653272] [2023-11-29 00:38:46,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:46,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:46,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:46,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 405 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:46,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:46,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:46,368 INFO L124 PetriNetUnfolderBase]: 149/280 cut-off events. [2023-11-29 00:38:46,368 INFO L125 PetriNetUnfolderBase]: For 642/642 co-relation queries the response was YES. [2023-11-29 00:38:46,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 280 events. 149/280 cut-off events. For 642/642 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 960 event pairs, 12 based on Foata normal form. 1/281 useless extension candidates. Maximal degree in co-relation 1053. Up to 132 conditions per place. [2023-11-29 00:38:46,372 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 48 selfloop transitions, 25 changer transitions 10/89 dead transitions. [2023-11-29 00:38:46,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 89 transitions, 729 flow [2023-11-29 00:38:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2023-11-29 00:38:46,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2023-11-29 00:38:46,374 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 216 transitions. [2023-11-29 00:38:46,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 216 transitions. [2023-11-29 00:38:46,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:46,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 216 transitions. [2023-11-29 00:38:46,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 24.0) internal successors, (216), 9 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,376 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,376 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 405 flow. Second operand 9 states and 216 transitions. [2023-11-29 00:38:46,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 89 transitions, 729 flow [2023-11-29 00:38:46,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 682 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-29 00:38:46,382 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 437 flow [2023-11-29 00:38:46,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=437, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-29 00:38:46,383 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2023-11-29 00:38:46,383 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 437 flow [2023-11-29 00:38:46,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:46,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:46,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:38:46,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:46,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:46,384 INFO L85 PathProgramCache]: Analyzing trace with hash 858637347, now seen corresponding path program 6 times [2023-11-29 00:38:46,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:46,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779963584] [2023-11-29 00:38:46,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:46,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779963584] [2023-11-29 00:38:46,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779963584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:46,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:46,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:46,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568740984] [2023-11-29 00:38:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:46,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:46,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:46,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:46,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 437 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:46,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:46,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:46,799 INFO L124 PetriNetUnfolderBase]: 166/309 cut-off events. [2023-11-29 00:38:46,799 INFO L125 PetriNetUnfolderBase]: For 848/848 co-relation queries the response was YES. [2023-11-29 00:38:46,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 309 events. 166/309 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1063 event pairs, 12 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 1261. Up to 149 conditions per place. [2023-11-29 00:38:46,802 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 43 selfloop transitions, 33 changer transitions 9/91 dead transitions. [2023-11-29 00:38:46,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 91 transitions, 828 flow [2023-11-29 00:38:46,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2023-11-29 00:38:46,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366366366366366 [2023-11-29 00:38:46,804 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 212 transitions. [2023-11-29 00:38:46,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 212 transitions. [2023-11-29 00:38:46,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:46,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 212 transitions. [2023-11-29 00:38:46,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,807 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,807 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 437 flow. Second operand 9 states and 212 transitions. [2023-11-29 00:38:46,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 91 transitions, 828 flow [2023-11-29 00:38:46,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 752 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:46,812 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 602 flow [2023-11-29 00:38:46,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2023-11-29 00:38:46,813 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2023-11-29 00:38:46,813 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 602 flow [2023-11-29 00:38:46,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:46,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:46,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:38:46,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:46,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1342711373, now seen corresponding path program 7 times [2023-11-29 00:38:46,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:46,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490786580] [2023-11-29 00:38:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:46,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:46,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:46,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490786580] [2023-11-29 00:38:46,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490786580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:46,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:46,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:46,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751249889] [2023-11-29 00:38:46,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:46,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:46,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:46,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:46,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:46,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:46,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 602 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:46,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:46,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:46,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:47,214 INFO L124 PetriNetUnfolderBase]: 164/308 cut-off events. [2023-11-29 00:38:47,214 INFO L125 PetriNetUnfolderBase]: For 1113/1113 co-relation queries the response was YES. [2023-11-29 00:38:47,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 308 events. 164/308 cut-off events. For 1113/1113 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1085 event pairs, 14 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 1343. Up to 147 conditions per place. [2023-11-29 00:38:47,217 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 51 selfloop transitions, 29 changer transitions 11/97 dead transitions. [2023-11-29 00:38:47,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 953 flow [2023-11-29 00:38:47,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2023-11-29 00:38:47,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6336336336336337 [2023-11-29 00:38:47,219 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 211 transitions. [2023-11-29 00:38:47,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 211 transitions. [2023-11-29 00:38:47,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:47,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 211 transitions. [2023-11-29 00:38:47,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,221 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,222 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 602 flow. Second operand 9 states and 211 transitions. [2023-11-29 00:38:47,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 953 flow [2023-11-29 00:38:47,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 871 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-29 00:38:47,229 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 583 flow [2023-11-29 00:38:47,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=583, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-11-29 00:38:47,230 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2023-11-29 00:38:47,230 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 583 flow [2023-11-29 00:38:47,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:47,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:47,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:38:47,230 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:47,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1577097641, now seen corresponding path program 8 times [2023-11-29 00:38:47,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:47,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605747236] [2023-11-29 00:38:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:47,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605747236] [2023-11-29 00:38:47,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605747236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:47,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:47,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783128748] [2023-11-29 00:38:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:47,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:47,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:47,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 583 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:47,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:47,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:47,596 INFO L124 PetriNetUnfolderBase]: 161/298 cut-off events. [2023-11-29 00:38:47,596 INFO L125 PetriNetUnfolderBase]: For 938/940 co-relation queries the response was YES. [2023-11-29 00:38:47,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 298 events. 161/298 cut-off events. For 938/940 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1022 event pairs, 13 based on Foata normal form. 1/299 useless extension candidates. Maximal degree in co-relation 1283. Up to 145 conditions per place. [2023-11-29 00:38:47,600 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 43 selfloop transitions, 32 changer transitions 9/90 dead transitions. [2023-11-29 00:38:47,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 90 transitions, 870 flow [2023-11-29 00:38:47,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2023-11-29 00:38:47,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366366366366366 [2023-11-29 00:38:47,602 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 212 transitions. [2023-11-29 00:38:47,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 212 transitions. [2023-11-29 00:38:47,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:47,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 212 transitions. [2023-11-29 00:38:47,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,604 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,604 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 583 flow. Second operand 9 states and 212 transitions. [2023-11-29 00:38:47,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 90 transitions, 870 flow [2023-11-29 00:38:47,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 804 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:47,610 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 629 flow [2023-11-29 00:38:47,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=629, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2023-11-29 00:38:47,611 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2023-11-29 00:38:47,611 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 629 flow [2023-11-29 00:38:47,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:47,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:47,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:38:47,612 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:47,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1602733633, now seen corresponding path program 9 times [2023-11-29 00:38:47,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:47,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388453812] [2023-11-29 00:38:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:47,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:47,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388453812] [2023-11-29 00:38:47,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388453812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:47,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:47,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:47,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173641453] [2023-11-29 00:38:47,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:47,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:47,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:47,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:47,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:47,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:47,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 629 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:47,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:47,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:47,973 INFO L124 PetriNetUnfolderBase]: 160/300 cut-off events. [2023-11-29 00:38:47,973 INFO L125 PetriNetUnfolderBase]: For 996/998 co-relation queries the response was YES. [2023-11-29 00:38:47,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 300 events. 160/300 cut-off events. For 996/998 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1057 event pairs, 15 based on Foata normal form. 2/302 useless extension candidates. Maximal degree in co-relation 1299. Up to 143 conditions per place. [2023-11-29 00:38:47,977 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 42 selfloop transitions, 30 changer transitions 12/90 dead transitions. [2023-11-29 00:38:47,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 883 flow [2023-11-29 00:38:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2023-11-29 00:38:47,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366366366366366 [2023-11-29 00:38:47,978 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 212 transitions. [2023-11-29 00:38:47,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 212 transitions. [2023-11-29 00:38:47,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:47,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 212 transitions. [2023-11-29 00:38:47,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,981 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,981 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 629 flow. Second operand 9 states and 212 transitions. [2023-11-29 00:38:47,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 883 flow [2023-11-29 00:38:47,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 821 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 00:38:47,988 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 604 flow [2023-11-29 00:38:47,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=604, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2023-11-29 00:38:47,989 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2023-11-29 00:38:47,989 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 604 flow [2023-11-29 00:38:47,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:47,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:47,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:47,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:38:47,990 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:47,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash 807893495, now seen corresponding path program 10 times [2023-11-29 00:38:47,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:47,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914394187] [2023-11-29 00:38:47,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:47,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:48,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:48,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914394187] [2023-11-29 00:38:48,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914394187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:48,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:48,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:48,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813823631] [2023-11-29 00:38:48,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:48,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:48,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:48,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:48,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:48,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:48,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 604 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:48,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:48,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:48,406 INFO L124 PetriNetUnfolderBase]: 164/303 cut-off events. [2023-11-29 00:38:48,406 INFO L125 PetriNetUnfolderBase]: For 1089/1091 co-relation queries the response was YES. [2023-11-29 00:38:48,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 303 events. 164/303 cut-off events. For 1089/1091 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1039 event pairs, 18 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1306. Up to 145 conditions per place. [2023-11-29 00:38:48,410 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 44 selfloop transitions, 31 changer transitions 9/90 dead transitions. [2023-11-29 00:38:48,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 90 transitions, 874 flow [2023-11-29 00:38:48,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:48,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2023-11-29 00:38:48,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366366366366366 [2023-11-29 00:38:48,413 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 212 transitions. [2023-11-29 00:38:48,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 212 transitions. [2023-11-29 00:38:48,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:48,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 212 transitions. [2023-11-29 00:38:48,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,415 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,415 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 604 flow. Second operand 9 states and 212 transitions. [2023-11-29 00:38:48,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 90 transitions, 874 flow [2023-11-29 00:38:48,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 810 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:48,423 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 624 flow [2023-11-29 00:38:48,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2023-11-29 00:38:48,424 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2023-11-29 00:38:48,424 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 624 flow [2023-11-29 00:38:48,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:48,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:48,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:38:48,425 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:48,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:48,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2099489217, now seen corresponding path program 11 times [2023-11-29 00:38:48,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:48,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843848297] [2023-11-29 00:38:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:48,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:48,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843848297] [2023-11-29 00:38:48,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843848297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:48,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:48,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164962047] [2023-11-29 00:38:48,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:48,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:48,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:48,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:48,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:48,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 624 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:48,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:48,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:48,811 INFO L124 PetriNetUnfolderBase]: 176/332 cut-off events. [2023-11-29 00:38:48,812 INFO L125 PetriNetUnfolderBase]: For 1307/1307 co-relation queries the response was YES. [2023-11-29 00:38:48,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 332 events. 176/332 cut-off events. For 1307/1307 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1236 event pairs, 14 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1408. Up to 157 conditions per place. [2023-11-29 00:38:48,815 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 47 selfloop transitions, 31 changer transitions 10/94 dead transitions. [2023-11-29 00:38:48,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 914 flow [2023-11-29 00:38:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2023-11-29 00:38:48,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2023-11-29 00:38:48,817 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 216 transitions. [2023-11-29 00:38:48,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 216 transitions. [2023-11-29 00:38:48,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:48,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 216 transitions. [2023-11-29 00:38:48,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 24.0) internal successors, (216), 9 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,820 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,820 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 624 flow. Second operand 9 states and 216 transitions. [2023-11-29 00:38:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 914 flow [2023-11-29 00:38:48,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 94 transitions, 838 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:48,828 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 637 flow [2023-11-29 00:38:48,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=637, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2023-11-29 00:38:48,829 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2023-11-29 00:38:48,829 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 637 flow [2023-11-29 00:38:48,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:48,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:48,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:38:48,830 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:48,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:48,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1625867983, now seen corresponding path program 12 times [2023-11-29 00:38:48,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:48,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227067472] [2023-11-29 00:38:48,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:48,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:48,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227067472] [2023-11-29 00:38:48,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227067472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:48,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:48,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:48,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574727363] [2023-11-29 00:38:48,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:48,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:48,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:48,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 637 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:48,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:48,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:48,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:49,247 INFO L124 PetriNetUnfolderBase]: 166/317 cut-off events. [2023-11-29 00:38:49,247 INFO L125 PetriNetUnfolderBase]: For 1375/1377 co-relation queries the response was YES. [2023-11-29 00:38:49,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 317 events. 166/317 cut-off events. For 1375/1377 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1153 event pairs, 18 based on Foata normal form. 2/319 useless extension candidates. Maximal degree in co-relation 1377. Up to 159 conditions per place. [2023-11-29 00:38:49,251 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 44 selfloop transitions, 28 changer transitions 12/90 dead transitions. [2023-11-29 00:38:49,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 894 flow [2023-11-29 00:38:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2023-11-29 00:38:49,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366366366366366 [2023-11-29 00:38:49,253 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 212 transitions. [2023-11-29 00:38:49,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 212 transitions. [2023-11-29 00:38:49,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:49,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 212 transitions. [2023-11-29 00:38:49,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,255 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,255 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 637 flow. Second operand 9 states and 212 transitions. [2023-11-29 00:38:49,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 894 flow [2023-11-29 00:38:49,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 824 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:49,263 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 592 flow [2023-11-29 00:38:49,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=592, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2023-11-29 00:38:49,264 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2023-11-29 00:38:49,264 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 592 flow [2023-11-29 00:38:49,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:49,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:49,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:38:49,265 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:49,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:49,265 INFO L85 PathProgramCache]: Analyzing trace with hash -407800171, now seen corresponding path program 13 times [2023-11-29 00:38:49,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:49,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392021510] [2023-11-29 00:38:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:49,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:49,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:49,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392021510] [2023-11-29 00:38:49,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392021510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:49,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:49,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495905263] [2023-11-29 00:38:49,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:49,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:49,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:49,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:49,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:49,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:49,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 592 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:49,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:49,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:49,601 INFO L124 PetriNetUnfolderBase]: 162/313 cut-off events. [2023-11-29 00:38:49,601 INFO L125 PetriNetUnfolderBase]: For 1214/1214 co-relation queries the response was YES. [2023-11-29 00:38:49,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 313 events. 162/313 cut-off events. For 1214/1214 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1104 event pairs, 19 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1306. Up to 157 conditions per place. [2023-11-29 00:38:49,603 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 43 selfloop transitions, 30 changer transitions 9/88 dead transitions. [2023-11-29 00:38:49,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 877 flow [2023-11-29 00:38:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:49,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2023-11-29 00:38:49,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2023-11-29 00:38:49,605 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 210 transitions. [2023-11-29 00:38:49,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 210 transitions. [2023-11-29 00:38:49,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:49,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 210 transitions. [2023-11-29 00:38:49,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.333333333333332) internal successors, (210), 9 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,608 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,608 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 592 flow. Second operand 9 states and 210 transitions. [2023-11-29 00:38:49,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 877 flow [2023-11-29 00:38:49,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 813 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-29 00:38:49,615 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 635 flow [2023-11-29 00:38:49,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2023-11-29 00:38:49,615 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2023-11-29 00:38:49,616 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 635 flow [2023-11-29 00:38:49,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:49,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:49,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:38:49,616 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:49,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:49,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1607019907, now seen corresponding path program 14 times [2023-11-29 00:38:49,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:49,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833440350] [2023-11-29 00:38:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:49,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:49,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833440350] [2023-11-29 00:38:49,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833440350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:49,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:49,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:49,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948972493] [2023-11-29 00:38:49,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:49,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:49,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:49,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 635 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:49,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:49,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:49,982 INFO L124 PetriNetUnfolderBase]: 172/331 cut-off events. [2023-11-29 00:38:49,983 INFO L125 PetriNetUnfolderBase]: For 1372/1372 co-relation queries the response was YES. [2023-11-29 00:38:49,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 331 events. 172/331 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1201 event pairs, 19 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1408. Up to 161 conditions per place. [2023-11-29 00:38:49,986 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 51 selfloop transitions, 27 changer transitions 9/93 dead transitions. [2023-11-29 00:38:49,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 962 flow [2023-11-29 00:38:49,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2023-11-29 00:38:49,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2023-11-29 00:38:49,987 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 210 transitions. [2023-11-29 00:38:49,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 210 transitions. [2023-11-29 00:38:49,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:49,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 210 transitions. [2023-11-29 00:38:49,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.333333333333332) internal successors, (210), 9 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,989 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,990 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 635 flow. Second operand 9 states and 210 transitions. [2023-11-29 00:38:49,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 93 transitions, 962 flow [2023-11-29 00:38:49,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 907 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 00:38:49,996 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 670 flow [2023-11-29 00:38:49,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=670, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2023-11-29 00:38:49,997 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2023-11-29 00:38:49,997 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 670 flow [2023-11-29 00:38:49,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:49,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:49,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:49,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:38:49,998 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:49,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash -214607181, now seen corresponding path program 15 times [2023-11-29 00:38:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:49,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928049060] [2023-11-29 00:38:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:49,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:50,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:50,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928049060] [2023-11-29 00:38:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928049060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:50,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:50,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:50,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350287424] [2023-11-29 00:38:50,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:50,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:50,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:50,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:50,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 670 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:50,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:50,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:50,328 INFO L124 PetriNetUnfolderBase]: 164/319 cut-off events. [2023-11-29 00:38:50,328 INFO L125 PetriNetUnfolderBase]: For 1446/1446 co-relation queries the response was YES. [2023-11-29 00:38:50,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 319 events. 164/319 cut-off events. For 1446/1446 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1140 event pairs, 19 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1398. Up to 163 conditions per place. [2023-11-29 00:38:50,331 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 49 selfloop transitions, 24 changer transitions 11/90 dead transitions. [2023-11-29 00:38:50,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 963 flow [2023-11-29 00:38:50,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2023-11-29 00:38:50,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2023-11-29 00:38:50,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 207 transitions. [2023-11-29 00:38:50,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 207 transitions. [2023-11-29 00:38:50,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:50,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 207 transitions. [2023-11-29 00:38:50,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,335 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,335 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 670 flow. Second operand 9 states and 207 transitions. [2023-11-29 00:38:50,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 963 flow [2023-11-29 00:38:50,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 895 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:50,343 INFO L231 Difference]: Finished difference. Result has 88 places, 67 transitions, 620 flow [2023-11-29 00:38:50,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=620, PETRI_PLACES=88, PETRI_TRANSITIONS=67} [2023-11-29 00:38:50,343 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2023-11-29 00:38:50,344 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 67 transitions, 620 flow [2023-11-29 00:38:50,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:50,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:50,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:38:50,344 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:50,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash -252884595, now seen corresponding path program 16 times [2023-11-29 00:38:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:50,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26708661] [2023-11-29 00:38:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:50,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:50,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26708661] [2023-11-29 00:38:50,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26708661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:50,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:50,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:50,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042903973] [2023-11-29 00:38:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:50,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:50,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:50,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:50,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:50,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 67 transitions, 620 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:50,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:50,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:50,702 INFO L124 PetriNetUnfolderBase]: 173/330 cut-off events. [2023-11-29 00:38:50,703 INFO L125 PetriNetUnfolderBase]: For 1463/1465 co-relation queries the response was YES. [2023-11-29 00:38:50,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1445 conditions, 330 events. 173/330 cut-off events. For 1463/1465 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1197 event pairs, 19 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 1414. Up to 167 conditions per place. [2023-11-29 00:38:50,707 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 46 selfloop transitions, 29 changer transitions 9/90 dead transitions. [2023-11-29 00:38:50,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 918 flow [2023-11-29 00:38:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2023-11-29 00:38:50,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6396396396396397 [2023-11-29 00:38:50,708 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 213 transitions. [2023-11-29 00:38:50,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 213 transitions. [2023-11-29 00:38:50,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:50,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 213 transitions. [2023-11-29 00:38:50,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,710 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,710 INFO L175 Difference]: Start difference. First operand has 88 places, 67 transitions, 620 flow. Second operand 9 states and 213 transitions. [2023-11-29 00:38:50,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 918 flow [2023-11-29 00:38:50,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 90 transitions, 860 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-29 00:38:50,720 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 658 flow [2023-11-29 00:38:50,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=658, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2023-11-29 00:38:50,720 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2023-11-29 00:38:50,721 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 658 flow [2023-11-29 00:38:50,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:50,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:50,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:38:50,722 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:50,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1976775253, now seen corresponding path program 17 times [2023-11-29 00:38:50,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:50,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688392794] [2023-11-29 00:38:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:50,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:50,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:50,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688392794] [2023-11-29 00:38:50,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688392794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:50,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:50,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:50,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696163101] [2023-11-29 00:38:50,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:50,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:50,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:50,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:50,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:50,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:50,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 658 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:50,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:50,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:50,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:51,104 INFO L124 PetriNetUnfolderBase]: 170/330 cut-off events. [2023-11-29 00:38:51,104 INFO L125 PetriNetUnfolderBase]: For 1600/1602 co-relation queries the response was YES. [2023-11-29 00:38:51,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 330 events. 170/330 cut-off events. For 1600/1602 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1226 event pairs, 21 based on Foata normal form. 2/331 useless extension candidates. Maximal degree in co-relation 1422. Up to 177 conditions per place. [2023-11-29 00:38:51,108 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 45 selfloop transitions, 26 changer transitions 12/89 dead transitions. [2023-11-29 00:38:51,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 926 flow [2023-11-29 00:38:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2023-11-29 00:38:51,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2023-11-29 00:38:51,109 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 210 transitions. [2023-11-29 00:38:51,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 210 transitions. [2023-11-29 00:38:51,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:51,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 210 transitions. [2023-11-29 00:38:51,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.333333333333332) internal successors, (210), 9 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,111 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,111 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 658 flow. Second operand 9 states and 210 transitions. [2023-11-29 00:38:51,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 89 transitions, 926 flow [2023-11-29 00:38:51,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 852 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:51,120 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 614 flow [2023-11-29 00:38:51,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=614, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2023-11-29 00:38:51,120 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2023-11-29 00:38:51,121 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 614 flow [2023-11-29 00:38:51,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:51,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:51,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:38:51,122 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:51,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:51,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1774738495, now seen corresponding path program 18 times [2023-11-29 00:38:51,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:51,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060837538] [2023-11-29 00:38:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:51,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:51,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:51,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060837538] [2023-11-29 00:38:51,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060837538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:51,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:51,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:51,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428305024] [2023-11-29 00:38:51,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:51,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:51,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:51,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:51,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:51,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:51,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 614 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:51,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:51,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:51,453 INFO L124 PetriNetUnfolderBase]: 162/317 cut-off events. [2023-11-29 00:38:51,453 INFO L125 PetriNetUnfolderBase]: For 1457/1457 co-relation queries the response was YES. [2023-11-29 00:38:51,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 317 events. 162/317 cut-off events. For 1457/1457 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1142 event pairs, 21 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1333. Up to 167 conditions per place. [2023-11-29 00:38:51,457 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 44 selfloop transitions, 24 changer transitions 11/85 dead transitions. [2023-11-29 00:38:51,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 868 flow [2023-11-29 00:38:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2023-11-29 00:38:51,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276276276276276 [2023-11-29 00:38:51,458 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 209 transitions. [2023-11-29 00:38:51,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 209 transitions. [2023-11-29 00:38:51,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:51,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 209 transitions. [2023-11-29 00:38:51,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,460 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,460 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 614 flow. Second operand 9 states and 209 transitions. [2023-11-29 00:38:51,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 868 flow [2023-11-29 00:38:51,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 812 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:51,467 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 576 flow [2023-11-29 00:38:51,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=576, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2023-11-29 00:38:51,468 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2023-11-29 00:38:51,468 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 576 flow [2023-11-29 00:38:51,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:51,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:51,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:38:51,468 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:51,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:51,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1557870147, now seen corresponding path program 19 times [2023-11-29 00:38:51,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:51,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050486267] [2023-11-29 00:38:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:51,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:51,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:51,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050486267] [2023-11-29 00:38:51,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050486267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:51,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:51,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:51,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960866020] [2023-11-29 00:38:51,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:51,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:51,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:51,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:51,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:51,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:51,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:51,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:51,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:51,826 INFO L124 PetriNetUnfolderBase]: 167/320 cut-off events. [2023-11-29 00:38:51,827 INFO L125 PetriNetUnfolderBase]: For 1569/1571 co-relation queries the response was YES. [2023-11-29 00:38:51,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1394 conditions, 320 events. 167/320 cut-off events. For 1569/1571 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1152 event pairs, 18 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1362. Up to 107 conditions per place. [2023-11-29 00:38:51,830 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 52 selfloop transitions, 22 changer transitions 9/89 dead transitions. [2023-11-29 00:38:51,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 911 flow [2023-11-29 00:38:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2023-11-29 00:38:51,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2023-11-29 00:38:51,832 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 207 transitions. [2023-11-29 00:38:51,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 207 transitions. [2023-11-29 00:38:51,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:51,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 207 transitions. [2023-11-29 00:38:51,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,834 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,834 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 576 flow. Second operand 9 states and 207 transitions. [2023-11-29 00:38:51,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 911 flow [2023-11-29 00:38:51,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 853 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-29 00:38:51,842 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 590 flow [2023-11-29 00:38:51,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=590, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2023-11-29 00:38:51,843 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2023-11-29 00:38:51,843 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 590 flow [2023-11-29 00:38:51,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:51,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:51,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:38:51,844 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:51,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:51,844 INFO L85 PathProgramCache]: Analyzing trace with hash -926047497, now seen corresponding path program 20 times [2023-11-29 00:38:51,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:51,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346873541] [2023-11-29 00:38:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:51,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:51,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:51,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346873541] [2023-11-29 00:38:51,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346873541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:51,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:51,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:38:51,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814968734] [2023-11-29 00:38:51,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:51,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:38:51,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:38:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:38:51,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:51,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:51,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:51,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:51,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:52,207 INFO L124 PetriNetUnfolderBase]: 174/329 cut-off events. [2023-11-29 00:38:52,207 INFO L125 PetriNetUnfolderBase]: For 1736/1736 co-relation queries the response was YES. [2023-11-29 00:38:52,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 329 events. 174/329 cut-off events. For 1736/1736 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1205 event pairs, 23 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1421. Up to 178 conditions per place. [2023-11-29 00:38:52,211 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 48 selfloop transitions, 25 changer transitions 10/89 dead transitions. [2023-11-29 00:38:52,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 889 flow [2023-11-29 00:38:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:38:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:38:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2023-11-29 00:38:52,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6336336336336337 [2023-11-29 00:38:52,212 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 211 transitions. [2023-11-29 00:38:52,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 211 transitions. [2023-11-29 00:38:52,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:52,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 211 transitions. [2023-11-29 00:38:52,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,214 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,214 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 590 flow. Second operand 9 states and 211 transitions. [2023-11-29 00:38:52,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 889 flow [2023-11-29 00:38:52,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 816 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:52,224 INFO L231 Difference]: Finished difference. Result has 90 places, 66 transitions, 590 flow [2023-11-29 00:38:52,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=590, PETRI_PLACES=90, PETRI_TRANSITIONS=66} [2023-11-29 00:38:52,224 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2023-11-29 00:38:52,224 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 66 transitions, 590 flow [2023-11-29 00:38:52,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:52,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:52,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 00:38:52,225 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:52,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash 743055306, now seen corresponding path program 1 times [2023-11-29 00:38:52,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:52,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369323539] [2023-11-29 00:38:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:52,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:52,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:52,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369323539] [2023-11-29 00:38:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369323539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:52,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:52,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:38:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793589600] [2023-11-29 00:38:52,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:52,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:52,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:38:52,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:52,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 66 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:52,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:52,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:52,439 INFO L124 PetriNetUnfolderBase]: 211/443 cut-off events. [2023-11-29 00:38:52,439 INFO L125 PetriNetUnfolderBase]: For 2688/2690 co-relation queries the response was YES. [2023-11-29 00:38:52,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 443 events. 211/443 cut-off events. For 2688/2690 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2053 event pairs, 23 based on Foata normal form. 14/455 useless extension candidates. Maximal degree in co-relation 1953. Up to 112 conditions per place. [2023-11-29 00:38:52,445 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 56 selfloop transitions, 28 changer transitions 4/108 dead transitions. [2023-11-29 00:38:52,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 108 transitions, 1095 flow [2023-11-29 00:38:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:38:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:38:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2023-11-29 00:38:52,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2023-11-29 00:38:52,446 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 182 transitions. [2023-11-29 00:38:52,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 182 transitions. [2023-11-29 00:38:52,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:52,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 182 transitions. [2023-11-29 00:38:52,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,448 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,448 INFO L175 Difference]: Start difference. First operand has 90 places, 66 transitions, 590 flow. Second operand 7 states and 182 transitions. [2023-11-29 00:38:52,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 108 transitions, 1095 flow [2023-11-29 00:38:52,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 108 transitions, 1025 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-29 00:38:52,462 INFO L231 Difference]: Finished difference. Result has 91 places, 79 transitions, 807 flow [2023-11-29 00:38:52,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=807, PETRI_PLACES=91, PETRI_TRANSITIONS=79} [2023-11-29 00:38:52,462 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 52 predicate places. [2023-11-29 00:38:52,462 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 79 transitions, 807 flow [2023-11-29 00:38:52,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:52,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:52,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 00:38:52,463 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:52,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash 446625982, now seen corresponding path program 2 times [2023-11-29 00:38:52,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245304221] [2023-11-29 00:38:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:52,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:52,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:52,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245304221] [2023-11-29 00:38:52,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245304221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:52,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:52,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:38:52,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623474044] [2023-11-29 00:38:52,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:52,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:52,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:52,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:52,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:38:52,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:52,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 807 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:52,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:52,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:52,688 INFO L124 PetriNetUnfolderBase]: 238/503 cut-off events. [2023-11-29 00:38:52,688 INFO L125 PetriNetUnfolderBase]: For 4066/4072 co-relation queries the response was YES. [2023-11-29 00:38:52,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2388 conditions, 503 events. 238/503 cut-off events. For 4066/4072 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2355 event pairs, 44 based on Foata normal form. 14/513 useless extension candidates. Maximal degree in co-relation 2349. Up to 207 conditions per place. [2023-11-29 00:38:52,694 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 67 selfloop transitions, 21 changer transitions 0/108 dead transitions. [2023-11-29 00:38:52,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 108 transitions, 1178 flow [2023-11-29 00:38:52,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:38:52,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:38:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2023-11-29 00:38:52,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7675675675675676 [2023-11-29 00:38:52,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 142 transitions. [2023-11-29 00:38:52,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 142 transitions. [2023-11-29 00:38:52,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:52,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 142 transitions. [2023-11-29 00:38:52,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2023-11-29 00:38:52,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,697 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,697 INFO L175 Difference]: Start difference. First operand has 91 places, 79 transitions, 807 flow. Second operand 5 states and 142 transitions. [2023-11-29 00:38:52,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 108 transitions, 1178 flow [2023-11-29 00:38:52,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 108 transitions, 1083 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-11-29 00:38:52,711 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 874 flow [2023-11-29 00:38:52,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=874, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2023-11-29 00:38:52,712 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2023-11-29 00:38:52,712 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 874 flow [2023-11-29 00:38:52,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:52,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:52,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 00:38:52,713 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:52,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:52,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1830364305, now seen corresponding path program 1 times [2023-11-29 00:38:52,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:52,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147126323] [2023-11-29 00:38:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:52,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:52,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:52,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147126323] [2023-11-29 00:38:52,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147126323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:38:52,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094652066] [2023-11-29 00:38:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:52,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:38:52,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:38:52,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:38:52,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:38:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:52,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:38:52,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:38:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:52,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:38:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094652066] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:38:52,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:38:52,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-11-29 00:38:52,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482818525] [2023-11-29 00:38:52,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:52,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:52,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:38:52,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:52,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 874 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:52,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:52,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:52,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:53,114 INFO L124 PetriNetUnfolderBase]: 326/709 cut-off events. [2023-11-29 00:38:53,115 INFO L125 PetriNetUnfolderBase]: For 4545/4553 co-relation queries the response was YES. [2023-11-29 00:38:53,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3230 conditions, 709 events. 326/709 cut-off events. For 4545/4553 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3837 event pairs, 15 based on Foata normal form. 17/724 useless extension candidates. Maximal degree in co-relation 3190. Up to 300 conditions per place. [2023-11-29 00:38:53,123 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 62 selfloop transitions, 34 changer transitions 0/116 dead transitions. [2023-11-29 00:38:53,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 116 transitions, 1303 flow [2023-11-29 00:38:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:38:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:38:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2023-11-29 00:38:53,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7621621621621621 [2023-11-29 00:38:53,125 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 141 transitions. [2023-11-29 00:38:53,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 141 transitions. [2023-11-29 00:38:53,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:53,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 141 transitions. [2023-11-29 00:38:53,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,126 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 874 flow. Second operand 5 states and 141 transitions. [2023-11-29 00:38:53,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 116 transitions, 1303 flow [2023-11-29 00:38:53,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 116 transitions, 1232 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-11-29 00:38:53,147 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 1054 flow [2023-11-29 00:38:53,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1054, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2023-11-29 00:38:53,148 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2023-11-29 00:38:53,148 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 1054 flow [2023-11-29 00:38:53,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:53,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:53,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:38:53,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:38:53,349 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:53,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash -954010672, now seen corresponding path program 3 times [2023-11-29 00:38:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:53,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564093446] [2023-11-29 00:38:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:53,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:53,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564093446] [2023-11-29 00:38:53,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564093446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:53,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:53,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:38:53,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890120376] [2023-11-29 00:38:53,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:53,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:53,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:38:53,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:53,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 1054 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:53,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:53,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:53,624 INFO L124 PetriNetUnfolderBase]: 311/705 cut-off events. [2023-11-29 00:38:53,625 INFO L125 PetriNetUnfolderBase]: For 4871/4881 co-relation queries the response was YES. [2023-11-29 00:38:53,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 705 events. 311/705 cut-off events. For 4871/4881 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3897 event pairs, 36 based on Foata normal form. 17/720 useless extension candidates. Maximal degree in co-relation 3182. Up to 154 conditions per place. [2023-11-29 00:38:53,633 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 72 selfloop transitions, 30 changer transitions 4/126 dead transitions. [2023-11-29 00:38:53,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 126 transitions, 1476 flow [2023-11-29 00:38:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:38:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:38:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2023-11-29 00:38:53,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7128378378378378 [2023-11-29 00:38:53,635 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 211 transitions. [2023-11-29 00:38:53,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 211 transitions. [2023-11-29 00:38:53,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:53,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 211 transitions. [2023-11-29 00:38:53,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,636 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,636 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 1054 flow. Second operand 8 states and 211 transitions. [2023-11-29 00:38:53,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 126 transitions, 1476 flow [2023-11-29 00:38:53,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 126 transitions, 1450 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-11-29 00:38:53,659 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 1095 flow [2023-11-29 00:38:53,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1095, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2023-11-29 00:38:53,660 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2023-11-29 00:38:53,660 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 1095 flow [2023-11-29 00:38:53,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:53,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:53,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 00:38:53,661 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:53,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1633271091, now seen corresponding path program 2 times [2023-11-29 00:38:53,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:53,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968562460] [2023-11-29 00:38:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:53,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:53,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:53,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968562460] [2023-11-29 00:38:53,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968562460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:53,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:53,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:38:53,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512933460] [2023-11-29 00:38:53,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:53,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:53,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:53,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:53,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:38:53,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:53,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 1095 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:53,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:53,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:53,876 INFO L124 PetriNetUnfolderBase]: 271/608 cut-off events. [2023-11-29 00:38:53,877 INFO L125 PetriNetUnfolderBase]: For 4768/4778 co-relation queries the response was YES. [2023-11-29 00:38:53,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 608 events. 271/608 cut-off events. For 4768/4778 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3234 event pairs, 24 based on Foata normal form. 20/628 useless extension candidates. Maximal degree in co-relation 2913. Up to 170 conditions per place. [2023-11-29 00:38:53,884 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 64 selfloop transitions, 24 changer transitions 3/110 dead transitions. [2023-11-29 00:38:53,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 1410 flow [2023-11-29 00:38:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:38:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:38:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2023-11-29 00:38:53,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2023-11-29 00:38:53,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 158 transitions. [2023-11-29 00:38:53,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 158 transitions. [2023-11-29 00:38:53,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:53,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 158 transitions. [2023-11-29 00:38:53,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,887 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,887 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 1095 flow. Second operand 6 states and 158 transitions. [2023-11-29 00:38:53,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 1410 flow [2023-11-29 00:38:53,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 1354 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-29 00:38:53,908 INFO L231 Difference]: Finished difference. Result has 111 places, 84 transitions, 1001 flow [2023-11-29 00:38:53,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1001, PETRI_PLACES=111, PETRI_TRANSITIONS=84} [2023-11-29 00:38:53,909 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2023-11-29 00:38:53,909 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 84 transitions, 1001 flow [2023-11-29 00:38:53,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:53,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:53,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 00:38:53,910 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:53,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash -203974936, now seen corresponding path program 4 times [2023-11-29 00:38:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488631136] [2023-11-29 00:38:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:53,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488631136] [2023-11-29 00:38:53,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488631136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:53,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:53,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:38:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800294936] [2023-11-29 00:38:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:53,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:53,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:38:53,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:53,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 84 transitions, 1001 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:53,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:53,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:53,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:54,109 INFO L124 PetriNetUnfolderBase]: 245/545 cut-off events. [2023-11-29 00:38:54,109 INFO L125 PetriNetUnfolderBase]: For 4369/4375 co-relation queries the response was YES. [2023-11-29 00:38:54,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2611 conditions, 545 events. 245/545 cut-off events. For 4369/4375 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2717 event pairs, 30 based on Foata normal form. 14/556 useless extension candidates. Maximal degree in co-relation 2566. Up to 272 conditions per place. [2023-11-29 00:38:54,116 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 58 selfloop transitions, 21 changer transitions 1/99 dead transitions. [2023-11-29 00:38:54,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 1206 flow [2023-11-29 00:38:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:38:54,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:38:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2023-11-29 00:38:54,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2023-11-29 00:38:54,118 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 135 transitions. [2023-11-29 00:38:54,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 135 transitions. [2023-11-29 00:38:54,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:54,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 135 transitions. [2023-11-29 00:38:54,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,119 INFO L175 Difference]: Start difference. First operand has 111 places, 84 transitions, 1001 flow. Second operand 5 states and 135 transitions. [2023-11-29 00:38:54,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 1206 flow [2023-11-29 00:38:54,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 99 transitions, 1154 flow, removed 13 selfloop flow, removed 6 redundant places. [2023-11-29 00:38:54,138 INFO L231 Difference]: Finished difference. Result has 108 places, 82 transitions, 941 flow [2023-11-29 00:38:54,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=941, PETRI_PLACES=108, PETRI_TRANSITIONS=82} [2023-11-29 00:38:54,139 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2023-11-29 00:38:54,139 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 82 transitions, 941 flow [2023-11-29 00:38:54,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:54,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:54,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 00:38:54,140 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:54,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash 76354211, now seen corresponding path program 3 times [2023-11-29 00:38:54,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:54,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982454431] [2023-11-29 00:38:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:54,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:54,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982454431] [2023-11-29 00:38:54,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982454431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:54,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:54,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:38:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368475831] [2023-11-29 00:38:54,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:54,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:54,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:38:54,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:54,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 82 transitions, 941 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:54,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:54,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:54,380 INFO L124 PetriNetUnfolderBase]: 306/666 cut-off events. [2023-11-29 00:38:54,380 INFO L125 PetriNetUnfolderBase]: For 5173/5176 co-relation queries the response was YES. [2023-11-29 00:38:54,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 666 events. 306/666 cut-off events. For 5173/5176 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3472 event pairs, 95 based on Foata normal form. 12/671 useless extension candidates. Maximal degree in co-relation 3210. Up to 370 conditions per place. [2023-11-29 00:38:54,389 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 68 selfloop transitions, 31 changer transitions 0/118 dead transitions. [2023-11-29 00:38:54,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 1507 flow [2023-11-29 00:38:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:38:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:38:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2023-11-29 00:38:54,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.745945945945946 [2023-11-29 00:38:54,390 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 138 transitions. [2023-11-29 00:38:54,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 138 transitions. [2023-11-29 00:38:54,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:54,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 138 transitions. [2023-11-29 00:38:54,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,392 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,392 INFO L175 Difference]: Start difference. First operand has 108 places, 82 transitions, 941 flow. Second operand 5 states and 138 transitions. [2023-11-29 00:38:54,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 1507 flow [2023-11-29 00:38:54,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 1424 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-11-29 00:38:54,410 INFO L231 Difference]: Finished difference. Result has 106 places, 97 transitions, 1226 flow [2023-11-29 00:38:54,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1226, PETRI_PLACES=106, PETRI_TRANSITIONS=97} [2023-11-29 00:38:54,410 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2023-11-29 00:38:54,410 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 97 transitions, 1226 flow [2023-11-29 00:38:54,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:54,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:54,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 00:38:54,411 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:54,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash 186332560, now seen corresponding path program 5 times [2023-11-29 00:38:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:54,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545029975] [2023-11-29 00:38:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:54,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:54,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:54,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545029975] [2023-11-29 00:38:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545029975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:54,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:54,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:38:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704339252] [2023-11-29 00:38:54,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:54,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:54,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:38:54,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:54,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 97 transitions, 1226 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:54,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:54,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:54,624 INFO L124 PetriNetUnfolderBase]: 276/603 cut-off events. [2023-11-29 00:38:54,624 INFO L125 PetriNetUnfolderBase]: For 4702/4705 co-relation queries the response was YES. [2023-11-29 00:38:54,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3064 conditions, 603 events. 276/603 cut-off events. For 4702/4705 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3044 event pairs, 15 based on Foata normal form. 17/617 useless extension candidates. Maximal degree in co-relation 3026. Up to 186 conditions per place. [2023-11-29 00:38:54,631 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 68 selfloop transitions, 23 changer transitions 2/111 dead transitions. [2023-11-29 00:38:54,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 1463 flow [2023-11-29 00:38:54,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:38:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:38:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2023-11-29 00:38:54,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2023-11-29 00:38:54,633 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 156 transitions. [2023-11-29 00:38:54,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 156 transitions. [2023-11-29 00:38:54,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:54,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 156 transitions. [2023-11-29 00:38:54,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,635 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,635 INFO L175 Difference]: Start difference. First operand has 106 places, 97 transitions, 1226 flow. Second operand 6 states and 156 transitions. [2023-11-29 00:38:54,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 1463 flow [2023-11-29 00:38:54,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 111 transitions, 1424 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-11-29 00:38:54,653 INFO L231 Difference]: Finished difference. Result has 109 places, 89 transitions, 1114 flow [2023-11-29 00:38:54,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1114, PETRI_PLACES=109, PETRI_TRANSITIONS=89} [2023-11-29 00:38:54,653 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2023-11-29 00:38:54,653 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 89 transitions, 1114 flow [2023-11-29 00:38:54,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:54,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:54,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 00:38:54,654 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:54,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash -770991035, now seen corresponding path program 4 times [2023-11-29 00:38:54,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:54,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851321986] [2023-11-29 00:38:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:54,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:54,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:54,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851321986] [2023-11-29 00:38:54,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851321986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:54,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:54,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:38:54,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307293864] [2023-11-29 00:38:54,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:54,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:54,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:38:54,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:54,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 89 transitions, 1114 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:54,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:54,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:54,867 INFO L124 PetriNetUnfolderBase]: 261/565 cut-off events. [2023-11-29 00:38:54,868 INFO L125 PetriNetUnfolderBase]: For 4709/4713 co-relation queries the response was YES. [2023-11-29 00:38:54,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 565 events. 261/565 cut-off events. For 4709/4713 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2794 event pairs, 51 based on Foata normal form. 12/576 useless extension candidates. Maximal degree in co-relation 2870. Up to 165 conditions per place. [2023-11-29 00:38:54,875 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 61 selfloop transitions, 28 changer transitions 3/110 dead transitions. [2023-11-29 00:38:54,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 1440 flow [2023-11-29 00:38:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:38:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:38:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2023-11-29 00:38:54,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6872586872586872 [2023-11-29 00:38:54,877 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 178 transitions. [2023-11-29 00:38:54,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 178 transitions. [2023-11-29 00:38:54,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:54,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 178 transitions. [2023-11-29 00:38:54,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,878 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,878 INFO L175 Difference]: Start difference. First operand has 109 places, 89 transitions, 1114 flow. Second operand 7 states and 178 transitions. [2023-11-29 00:38:54,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 1440 flow [2023-11-29 00:38:54,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 1364 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-29 00:38:54,896 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 1096 flow [2023-11-29 00:38:54,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1096, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2023-11-29 00:38:54,897 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2023-11-29 00:38:54,897 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 1096 flow [2023-11-29 00:38:54,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:54,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:54,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 00:38:54,898 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:54,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash -773213003, now seen corresponding path program 5 times [2023-11-29 00:38:54,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:54,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090920974] [2023-11-29 00:38:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:54,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:54,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090920974] [2023-11-29 00:38:54,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090920974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:38:54,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:38:54,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:38:54,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470469406] [2023-11-29 00:38:54,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:38:54,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:38:54,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:38:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:38:54,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:38:54,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 1096 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:54,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:54,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:38:54,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:55,133 INFO L124 PetriNetUnfolderBase]: 225/475 cut-off events. [2023-11-29 00:38:55,134 INFO L125 PetriNetUnfolderBase]: For 4072/4074 co-relation queries the response was YES. [2023-11-29 00:38:55,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 475 events. 225/475 cut-off events. For 4072/4074 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2184 event pairs, 40 based on Foata normal form. 6/480 useless extension candidates. Maximal degree in co-relation 2508. Up to 146 conditions per place. [2023-11-29 00:38:55,139 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 61 selfloop transitions, 27 changer transitions 2/108 dead transitions. [2023-11-29 00:38:55,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 108 transitions, 1363 flow [2023-11-29 00:38:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:38:55,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:38:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2023-11-29 00:38:55,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6858108108108109 [2023-11-29 00:38:55,141 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 203 transitions. [2023-11-29 00:38:55,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 203 transitions. [2023-11-29 00:38:55,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:55,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 203 transitions. [2023-11-29 00:38:55,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:55,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:55,142 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:55,143 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 1096 flow. Second operand 8 states and 203 transitions. [2023-11-29 00:38:55,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 108 transitions, 1363 flow [2023-11-29 00:38:55,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 108 transitions, 1312 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-29 00:38:55,157 INFO L231 Difference]: Finished difference. Result has 111 places, 83 transitions, 1027 flow [2023-11-29 00:38:55,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1027, PETRI_PLACES=111, PETRI_TRANSITIONS=83} [2023-11-29 00:38:55,158 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2023-11-29 00:38:55,158 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 83 transitions, 1027 flow [2023-11-29 00:38:55,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:55,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:55,159 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] [2023-11-29 00:38:55,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 00:38:55,159 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:55,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:55,159 INFO L85 PathProgramCache]: Analyzing trace with hash 211575996, now seen corresponding path program 1 times [2023-11-29 00:38:55,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:55,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490247082] [2023-11-29 00:38:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:55,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:55,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:55,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490247082] [2023-11-29 00:38:55,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490247082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:38:55,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953875875] [2023-11-29 00:38:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:55,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:38:55,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:38:55,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:38:55,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:38:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:55,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:38:55,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:38:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:55,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:38:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:55,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953875875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:38:55,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:38:55,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:38:55,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996358911] [2023-11-29 00:38:55,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:38:55,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:38:55,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:55,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:38:55,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:38:55,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:55,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 83 transitions, 1027 flow. Second operand has 23 states, 23 states have (on average 18.73913043478261) internal successors, (431), 23 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:55,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:55,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:55,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:57,343 INFO L124 PetriNetUnfolderBase]: 677/1345 cut-off events. [2023-11-29 00:38:57,343 INFO L125 PetriNetUnfolderBase]: For 9605/9613 co-relation queries the response was YES. [2023-11-29 00:38:57,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6393 conditions, 1345 events. 677/1345 cut-off events. For 9605/9613 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7725 event pairs, 39 based on Foata normal form. 6/1351 useless extension candidates. Maximal degree in co-relation 6355. Up to 236 conditions per place. [2023-11-29 00:38:57,352 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 128 selfloop transitions, 85 changer transitions 64/283 dead transitions. [2023-11-29 00:38:57,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 283 transitions, 3326 flow [2023-11-29 00:38:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 00:38:57,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-29 00:38:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 814 transitions. [2023-11-29 00:38:57,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2023-11-29 00:38:57,355 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 814 transitions. [2023-11-29 00:38:57,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 814 transitions. [2023-11-29 00:38:57,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:57,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 814 transitions. [2023-11-29 00:38:57,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 22.61111111111111) internal successors, (814), 36 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:57,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 37.0) internal successors, (1369), 37 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:57,360 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 37.0) internal successors, (1369), 37 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:57,360 INFO L175 Difference]: Start difference. First operand has 111 places, 83 transitions, 1027 flow. Second operand 36 states and 814 transitions. [2023-11-29 00:38:57,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 283 transitions, 3326 flow [2023-11-29 00:38:57,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 283 transitions, 3113 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-29 00:38:57,385 INFO L231 Difference]: Finished difference. Result has 158 places, 131 transitions, 1922 flow [2023-11-29 00:38:57,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1922, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2023-11-29 00:38:57,386 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 119 predicate places. [2023-11-29 00:38:57,386 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 1922 flow [2023-11-29 00:38:57,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.73913043478261) internal successors, (431), 23 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:57,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:57,386 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] [2023-11-29 00:38:57,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:38:57,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 00:38:57,587 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:57,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash 827257144, now seen corresponding path program 2 times [2023-11-29 00:38:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:57,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83612091] [2023-11-29 00:38:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:57,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:57,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83612091] [2023-11-29 00:38:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83612091] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:38:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778057343] [2023-11-29 00:38:57,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:38:57,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:38:57,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:38:57,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:38:57,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:38:57,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:38:57,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:38:57,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:38:57,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:38:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:57,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:38:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778057343] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:38:58,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:38:58,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:38:58,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513681730] [2023-11-29 00:38:58,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:38:58,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:38:58,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:38:58,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:38:58,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:58,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 1922 flow. Second operand has 23 states, 23 states have (on average 18.47826086956522) internal successors, (425), 23 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:58,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:58,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:58,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:38:58,750 INFO L124 PetriNetUnfolderBase]: 749/1584 cut-off events. [2023-11-29 00:38:58,750 INFO L125 PetriNetUnfolderBase]: For 11959/11971 co-relation queries the response was YES. [2023-11-29 00:38:58,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7756 conditions, 1584 events. 749/1584 cut-off events. For 11959/11971 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9851 event pairs, 101 based on Foata normal form. 6/1590 useless extension candidates. Maximal degree in co-relation 7698. Up to 612 conditions per place. [2023-11-29 00:38:58,766 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 101 selfloop transitions, 97 changer transitions 16/220 dead transitions. [2023-11-29 00:38:58,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 220 transitions, 3295 flow [2023-11-29 00:38:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:38:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:38:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 324 transitions. [2023-11-29 00:38:58,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6254826254826255 [2023-11-29 00:38:58,770 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 324 transitions. [2023-11-29 00:38:58,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 324 transitions. [2023-11-29 00:38:58,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:38:58,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 324 transitions. [2023-11-29 00:38:58,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:58,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:58,773 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:58,773 INFO L175 Difference]: Start difference. First operand has 158 places, 131 transitions, 1922 flow. Second operand 14 states and 324 transitions. [2023-11-29 00:38:58,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 220 transitions, 3295 flow [2023-11-29 00:38:58,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 220 transitions, 2773 flow, removed 182 selfloop flow, removed 16 redundant places. [2023-11-29 00:38:58,816 INFO L231 Difference]: Finished difference. Result has 149 places, 163 transitions, 2219 flow [2023-11-29 00:38:58,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2219, PETRI_PLACES=149, PETRI_TRANSITIONS=163} [2023-11-29 00:38:58,817 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 110 predicate places. [2023-11-29 00:38:58,817 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 163 transitions, 2219 flow [2023-11-29 00:38:58,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.47826086956522) internal successors, (425), 23 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:58,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:38:58,817 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] [2023-11-29 00:38:58,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:38:59,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 00:38:59,018 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:38:59,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1265581732, now seen corresponding path program 3 times [2023-11-29 00:38:59,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:59,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419433946] [2023-11-29 00:38:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:59,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:38:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:59,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:59,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419433946] [2023-11-29 00:38:59,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419433946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:38:59,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873161390] [2023-11-29 00:38:59,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:38:59,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:38:59,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:38:59,178 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:38:59,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:38:59,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:38:59,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:38:59,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:38:59,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:38:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:59,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:38:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:38:59,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873161390] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:38:59,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:38:59,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:38:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784609311] [2023-11-29 00:38:59,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:38:59,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:38:59,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:59,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:38:59,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:38:59,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:38:59,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 163 transitions, 2219 flow. Second operand has 23 states, 23 states have (on average 18.52173913043478) internal successors, (426), 23 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:38:59,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:38:59,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:38:59,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:00,376 INFO L124 PetriNetUnfolderBase]: 892/1902 cut-off events. [2023-11-29 00:39:00,376 INFO L125 PetriNetUnfolderBase]: For 12900/12920 co-relation queries the response was YES. [2023-11-29 00:39:00,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8793 conditions, 1902 events. 892/1902 cut-off events. For 12900/12920 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12585 event pairs, 107 based on Foata normal form. 14/1916 useless extension candidates. Maximal degree in co-relation 8741. Up to 584 conditions per place. [2023-11-29 00:39:00,387 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 85 selfloop transitions, 151 changer transitions 12/254 dead transitions. [2023-11-29 00:39:00,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 254 transitions, 3694 flow [2023-11-29 00:39:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:39:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 00:39:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 385 transitions. [2023-11-29 00:39:00,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120826709062003 [2023-11-29 00:39:00,388 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 385 transitions. [2023-11-29 00:39:00,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 385 transitions. [2023-11-29 00:39:00,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:00,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 385 transitions. [2023-11-29 00:39:00,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 22.647058823529413) internal successors, (385), 17 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:00,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 37.0) internal successors, (666), 18 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:00,391 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 37.0) internal successors, (666), 18 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:00,391 INFO L175 Difference]: Start difference. First operand has 149 places, 163 transitions, 2219 flow. Second operand 17 states and 385 transitions. [2023-11-29 00:39:00,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 254 transitions, 3694 flow [2023-11-29 00:39:00,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 254 transitions, 3589 flow, removed 22 selfloop flow, removed 6 redundant places. [2023-11-29 00:39:00,427 INFO L231 Difference]: Finished difference. Result has 164 places, 207 transitions, 3269 flow [2023-11-29 00:39:00,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3269, PETRI_PLACES=164, PETRI_TRANSITIONS=207} [2023-11-29 00:39:00,428 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2023-11-29 00:39:00,428 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 207 transitions, 3269 flow [2023-11-29 00:39:00,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.52173913043478) internal successors, (426), 23 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:00,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:00,428 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] [2023-11-29 00:39:00,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:39:00,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 00:39:00,632 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:00,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:00,632 INFO L85 PathProgramCache]: Analyzing trace with hash -612595184, now seen corresponding path program 4 times [2023-11-29 00:39:00,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:00,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573255990] [2023-11-29 00:39:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:00,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:00,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:00,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573255990] [2023-11-29 00:39:00,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573255990] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154820275] [2023-11-29 00:39:00,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:39:00,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:00,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:00,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:00,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:39:00,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:39:00,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:00,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:00,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:00,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:01,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154820275] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:01,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:01,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:39:01,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451964755] [2023-11-29 00:39:01,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:01,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:39:01,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:01,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:39:01,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:39:01,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:01,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 207 transitions, 3269 flow. Second operand has 23 states, 23 states have (on average 18.608695652173914) internal successors, (428), 23 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:01,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:01,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:01,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:01,938 INFO L124 PetriNetUnfolderBase]: 870/1846 cut-off events. [2023-11-29 00:39:01,938 INFO L125 PetriNetUnfolderBase]: For 15938/15946 co-relation queries the response was YES. [2023-11-29 00:39:01,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9587 conditions, 1846 events. 870/1846 cut-off events. For 15938/15946 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12047 event pairs, 93 based on Foata normal form. 8/1854 useless extension candidates. Maximal degree in co-relation 9531. Up to 590 conditions per place. [2023-11-29 00:39:01,950 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 87 selfloop transitions, 144 changer transitions 17/254 dead transitions. [2023-11-29 00:39:01,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 254 transitions, 4091 flow [2023-11-29 00:39:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:39:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 00:39:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 385 transitions. [2023-11-29 00:39:01,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120826709062003 [2023-11-29 00:39:01,951 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 385 transitions. [2023-11-29 00:39:01,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 385 transitions. [2023-11-29 00:39:01,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:01,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 385 transitions. [2023-11-29 00:39:01,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 22.647058823529413) internal successors, (385), 17 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:01,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 37.0) internal successors, (666), 18 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:01,953 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 37.0) internal successors, (666), 18 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:01,953 INFO L175 Difference]: Start difference. First operand has 164 places, 207 transitions, 3269 flow. Second operand 17 states and 385 transitions. [2023-11-29 00:39:01,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 254 transitions, 4091 flow [2023-11-29 00:39:02,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 254 transitions, 3896 flow, removed 78 selfloop flow, removed 4 redundant places. [2023-11-29 00:39:02,015 INFO L231 Difference]: Finished difference. Result has 177 places, 204 transitions, 3313 flow [2023-11-29 00:39:02,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3313, PETRI_PLACES=177, PETRI_TRANSITIONS=204} [2023-11-29 00:39:02,016 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2023-11-29 00:39:02,016 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 204 transitions, 3313 flow [2023-11-29 00:39:02,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.608695652173914) internal successors, (428), 23 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:02,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:02,016 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] [2023-11-29 00:39:02,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:39:02,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 00:39:02,217 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:02,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash 899505320, now seen corresponding path program 5 times [2023-11-29 00:39:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:02,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674781016] [2023-11-29 00:39:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:02,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:02,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:02,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674781016] [2023-11-29 00:39:02,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674781016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:02,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657719455] [2023-11-29 00:39:02,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:39:02,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:02,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:02,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:02,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:39:02,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:39:02,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:02,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:39:02,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:02,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:39:02,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657719455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:39:02,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:39:02,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2023-11-29 00:39:02,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090970674] [2023-11-29 00:39:02,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:39:02,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:39:02,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:02,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:39:02,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:39:02,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:02,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 204 transitions, 3313 flow. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:02,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:02,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:02,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:02,863 INFO L124 PetriNetUnfolderBase]: 798/1679 cut-off events. [2023-11-29 00:39:02,863 INFO L125 PetriNetUnfolderBase]: For 15892/15900 co-relation queries the response was YES. [2023-11-29 00:39:02,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9250 conditions, 1679 events. 798/1679 cut-off events. For 15892/15900 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10428 event pairs, 158 based on Foata normal form. 6/1685 useless extension candidates. Maximal degree in co-relation 9192. Up to 988 conditions per place. [2023-11-29 00:39:02,879 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 123 selfloop transitions, 61 changer transitions 45/235 dead transitions. [2023-11-29 00:39:02,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 235 transitions, 4108 flow [2023-11-29 00:39:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:39:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:39:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2023-11-29 00:39:02,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276276276276276 [2023-11-29 00:39:02,881 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 209 transitions. [2023-11-29 00:39:02,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 209 transitions. [2023-11-29 00:39:02,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:02,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 209 transitions. [2023-11-29 00:39:02,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:02,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:02,883 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:02,883 INFO L175 Difference]: Start difference. First operand has 177 places, 204 transitions, 3313 flow. Second operand 9 states and 209 transitions. [2023-11-29 00:39:02,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 235 transitions, 4108 flow [2023-11-29 00:39:02,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 235 transitions, 3854 flow, removed 6 selfloop flow, removed 14 redundant places. [2023-11-29 00:39:02,963 INFO L231 Difference]: Finished difference. Result has 171 places, 177 transitions, 2711 flow [2023-11-29 00:39:02,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2711, PETRI_PLACES=171, PETRI_TRANSITIONS=177} [2023-11-29 00:39:02,964 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 132 predicate places. [2023-11-29 00:39:02,964 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 177 transitions, 2711 flow [2023-11-29 00:39:02,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:02,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:02,965 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] [2023-11-29 00:39:02,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:39:03,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 00:39:03,168 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:03,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash -435562226, now seen corresponding path program 6 times [2023-11-29 00:39:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:03,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133858381] [2023-11-29 00:39:03,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:03,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:03,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133858381] [2023-11-29 00:39:03,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133858381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:03,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546313015] [2023-11-29 00:39:03,307 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:39:03,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:03,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:03,309 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:03,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:39:03,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 00:39:03,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:03,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:39:03,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:03,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:39:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546313015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:39:03,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:39:03,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2023-11-29 00:39:03,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751424687] [2023-11-29 00:39:03,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:39:03,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:39:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:03,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:39:03,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:39:03,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:03,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 177 transitions, 2711 flow. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:03,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:03,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:03,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:03,763 INFO L124 PetriNetUnfolderBase]: 741/1590 cut-off events. [2023-11-29 00:39:03,763 INFO L125 PetriNetUnfolderBase]: For 13319/13319 co-relation queries the response was YES. [2023-11-29 00:39:03,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8010 conditions, 1590 events. 741/1590 cut-off events. For 13319/13319 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9894 event pairs, 178 based on Foata normal form. 5/1594 useless extension candidates. Maximal degree in co-relation 7951. Up to 978 conditions per place. [2023-11-29 00:39:03,773 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 117 selfloop transitions, 55 changer transitions 26/204 dead transitions. [2023-11-29 00:39:03,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 204 transitions, 3381 flow [2023-11-29 00:39:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:39:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:39:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2023-11-29 00:39:03,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6246246246246246 [2023-11-29 00:39:03,774 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 208 transitions. [2023-11-29 00:39:03,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 208 transitions. [2023-11-29 00:39:03,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:03,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 208 transitions. [2023-11-29 00:39:03,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:03,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:03,775 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:03,775 INFO L175 Difference]: Start difference. First operand has 171 places, 177 transitions, 2711 flow. Second operand 9 states and 208 transitions. [2023-11-29 00:39:03,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 204 transitions, 3381 flow [2023-11-29 00:39:03,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 204 transitions, 3057 flow, removed 21 selfloop flow, removed 16 redundant places. [2023-11-29 00:39:03,813 INFO L231 Difference]: Finished difference. Result has 153 places, 162 transitions, 2296 flow [2023-11-29 00:39:03,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2296, PETRI_PLACES=153, PETRI_TRANSITIONS=162} [2023-11-29 00:39:03,814 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 114 predicate places. [2023-11-29 00:39:03,814 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 162 transitions, 2296 flow [2023-11-29 00:39:03,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:03,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:03,814 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] [2023-11-29 00:39:03,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:39:04,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 00:39:04,015 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:04,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1298803742, now seen corresponding path program 7 times [2023-11-29 00:39:04,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:04,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070274166] [2023-11-29 00:39:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:04,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:04,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:04,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070274166] [2023-11-29 00:39:04,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070274166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:04,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350345098] [2023-11-29 00:39:04,128 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:39:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:04,129 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:04,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:39:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:04,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:04,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:04,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:04,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350345098] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:04,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:04,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:39:04,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792766935] [2023-11-29 00:39:04,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:04,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:39:04,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:04,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:39:04,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:39:04,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:04,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 162 transitions, 2296 flow. Second operand has 23 states, 23 states have (on average 18.52173913043478) internal successors, (426), 23 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:04,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:04,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:04,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:05,020 INFO L124 PetriNetUnfolderBase]: 660/1356 cut-off events. [2023-11-29 00:39:05,020 INFO L125 PetriNetUnfolderBase]: For 10904/10912 co-relation queries the response was YES. [2023-11-29 00:39:05,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6744 conditions, 1356 events. 660/1356 cut-off events. For 10904/10912 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7828 event pairs, 70 based on Foata normal form. 11/1367 useless extension candidates. Maximal degree in co-relation 6691. Up to 455 conditions per place. [2023-11-29 00:39:05,027 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 79 selfloop transitions, 72 changer transitions 48/205 dead transitions. [2023-11-29 00:39:05,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 205 transitions, 3074 flow [2023-11-29 00:39:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:39:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:39:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 294 transitions. [2023-11-29 00:39:05,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6112266112266113 [2023-11-29 00:39:05,028 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 294 transitions. [2023-11-29 00:39:05,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 294 transitions. [2023-11-29 00:39:05,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:05,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 294 transitions. [2023-11-29 00:39:05,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 22.615384615384617) internal successors, (294), 13 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:05,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:05,030 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:05,030 INFO L175 Difference]: Start difference. First operand has 153 places, 162 transitions, 2296 flow. Second operand 13 states and 294 transitions. [2023-11-29 00:39:05,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 205 transitions, 3074 flow [2023-11-29 00:39:05,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 205 transitions, 2950 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-29 00:39:05,058 INFO L231 Difference]: Finished difference. Result has 154 places, 131 transitions, 1862 flow [2023-11-29 00:39:05,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1862, PETRI_PLACES=154, PETRI_TRANSITIONS=131} [2023-11-29 00:39:05,059 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 115 predicate places. [2023-11-29 00:39:05,059 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 131 transitions, 1862 flow [2023-11-29 00:39:05,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.52173913043478) internal successors, (426), 23 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:05,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:05,059 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] [2023-11-29 00:39:05,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:39:05,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:05,260 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:05,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash 158369650, now seen corresponding path program 8 times [2023-11-29 00:39:05,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:05,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277062741] [2023-11-29 00:39:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:05,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:05,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277062741] [2023-11-29 00:39:05,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277062741] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:05,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314698128] [2023-11-29 00:39:05,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:39:05,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:05,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:05,366 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:05,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:39:05,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:39:05,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:05,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:05,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:05,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:05,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314698128] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:05,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:39:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135838282] [2023-11-29 00:39:05,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:05,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:39:05,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:39:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:39:05,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:05,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 131 transitions, 1862 flow. Second operand has 23 states, 23 states have (on average 18.47826086956522) internal successors, (425), 23 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:05,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:05,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:05,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:06,156 INFO L124 PetriNetUnfolderBase]: 500/1081 cut-off events. [2023-11-29 00:39:06,156 INFO L125 PetriNetUnfolderBase]: For 8416/8424 co-relation queries the response was YES. [2023-11-29 00:39:06,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5324 conditions, 1081 events. 500/1081 cut-off events. For 8416/8424 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6132 event pairs, 79 based on Foata normal form. 6/1087 useless extension candidates. Maximal degree in co-relation 5273. Up to 449 conditions per place. [2023-11-29 00:39:06,162 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 79 selfloop transitions, 61 changer transitions 26/172 dead transitions. [2023-11-29 00:39:06,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 172 transitions, 2527 flow [2023-11-29 00:39:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:39:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:39:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 278 transitions. [2023-11-29 00:39:06,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6261261261261262 [2023-11-29 00:39:06,163 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 278 transitions. [2023-11-29 00:39:06,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 278 transitions. [2023-11-29 00:39:06,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:06,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 278 transitions. [2023-11-29 00:39:06,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 23.166666666666668) internal successors, (278), 12 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:06,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 37.0) internal successors, (481), 13 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:06,165 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 37.0) internal successors, (481), 13 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:06,165 INFO L175 Difference]: Start difference. First operand has 154 places, 131 transitions, 1862 flow. Second operand 12 states and 278 transitions. [2023-11-29 00:39:06,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 172 transitions, 2527 flow [2023-11-29 00:39:06,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 172 transitions, 2358 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-11-29 00:39:06,187 INFO L231 Difference]: Finished difference. Result has 149 places, 118 transitions, 1655 flow [2023-11-29 00:39:06,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1655, PETRI_PLACES=149, PETRI_TRANSITIONS=118} [2023-11-29 00:39:06,187 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 110 predicate places. [2023-11-29 00:39:06,187 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 118 transitions, 1655 flow [2023-11-29 00:39:06,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.47826086956522) internal successors, (425), 23 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:06,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:06,188 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] [2023-11-29 00:39:06,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:39:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:06,388 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:06,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:06,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1478803898, now seen corresponding path program 9 times [2023-11-29 00:39:06,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:06,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145756280] [2023-11-29 00:39:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145756280] [2023-11-29 00:39:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145756280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490468236] [2023-11-29 00:39:06,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:39:06,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:06,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:06,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:06,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:39:06,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:39:06,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:06,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:06,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:06,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:06,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490468236] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:06,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:06,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-11-29 00:39:06,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359503827] [2023-11-29 00:39:06,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:06,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:39:06,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:06,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:39:06,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:39:06,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:06,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 118 transitions, 1655 flow. Second operand has 20 states, 20 states have (on average 18.6) internal successors, (372), 20 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:06,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:06,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:06,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:07,774 INFO L124 PetriNetUnfolderBase]: 603/1249 cut-off events. [2023-11-29 00:39:07,774 INFO L125 PetriNetUnfolderBase]: For 11398/11410 co-relation queries the response was YES. [2023-11-29 00:39:07,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 1249 events. 603/1249 cut-off events. For 11398/11410 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7096 event pairs, 30 based on Foata normal form. 18/1267 useless extension candidates. Maximal degree in co-relation 6495. Up to 292 conditions per place. [2023-11-29 00:39:07,782 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 84 selfloop transitions, 123 changer transitions 21/234 dead transitions. [2023-11-29 00:39:07,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 234 transitions, 3425 flow [2023-11-29 00:39:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 00:39:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 00:39:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 586 transitions. [2023-11-29 00:39:07,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865865865865866 [2023-11-29 00:39:07,784 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 586 transitions. [2023-11-29 00:39:07,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 586 transitions. [2023-11-29 00:39:07,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:07,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 586 transitions. [2023-11-29 00:39:07,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 21.703703703703702) internal successors, (586), 27 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:07,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 37.0) internal successors, (1036), 28 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:07,788 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 37.0) internal successors, (1036), 28 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:07,788 INFO L175 Difference]: Start difference. First operand has 149 places, 118 transitions, 1655 flow. Second operand 27 states and 586 transitions. [2023-11-29 00:39:07,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 234 transitions, 3425 flow [2023-11-29 00:39:07,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 234 transitions, 3176 flow, removed 35 selfloop flow, removed 12 redundant places. [2023-11-29 00:39:07,816 INFO L231 Difference]: Finished difference. Result has 166 places, 177 transitions, 2874 flow [2023-11-29 00:39:07,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2874, PETRI_PLACES=166, PETRI_TRANSITIONS=177} [2023-11-29 00:39:07,816 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 127 predicate places. [2023-11-29 00:39:07,817 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 177 transitions, 2874 flow [2023-11-29 00:39:07,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.6) internal successors, (372), 20 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:07,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:07,817 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] [2023-11-29 00:39:07,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:39:08,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 00:39:08,018 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:08,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash -837690874, now seen corresponding path program 10 times [2023-11-29 00:39:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:08,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337193542] [2023-11-29 00:39:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:08,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:08,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337193542] [2023-11-29 00:39:08,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337193542] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851851800] [2023-11-29 00:39:08,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:39:08,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:08,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:08,132 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:08,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:39:08,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:39:08,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:08,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:08,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:08,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:08,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851851800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:08,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:08,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-11-29 00:39:08,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770609881] [2023-11-29 00:39:08,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:08,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 00:39:08,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 00:39:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:39:08,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:08,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 177 transitions, 2874 flow. Second operand has 22 states, 22 states have (on average 18.5) internal successors, (407), 22 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:08,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:08,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:08,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:08,970 INFO L124 PetriNetUnfolderBase]: 673/1392 cut-off events. [2023-11-29 00:39:08,970 INFO L125 PetriNetUnfolderBase]: For 14232/14242 co-relation queries the response was YES. [2023-11-29 00:39:08,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7877 conditions, 1392 events. 673/1392 cut-off events. For 14232/14242 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8157 event pairs, 126 based on Foata normal form. 5/1397 useless extension candidates. Maximal degree in co-relation 7820. Up to 682 conditions per place. [2023-11-29 00:39:08,979 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 115 selfloop transitions, 101 changer transitions 22/244 dead transitions. [2023-11-29 00:39:08,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 244 transitions, 4216 flow [2023-11-29 00:39:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:39:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:39:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 289 transitions. [2023-11-29 00:39:08,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008316008316008 [2023-11-29 00:39:08,980 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 289 transitions. [2023-11-29 00:39:08,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 289 transitions. [2023-11-29 00:39:08,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:08,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 289 transitions. [2023-11-29 00:39:08,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 22.23076923076923) internal successors, (289), 13 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:08,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:08,981 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:08,981 INFO L175 Difference]: Start difference. First operand has 166 places, 177 transitions, 2874 flow. Second operand 13 states and 289 transitions. [2023-11-29 00:39:08,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 244 transitions, 4216 flow [2023-11-29 00:39:09,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 244 transitions, 3754 flow, removed 178 selfloop flow, removed 8 redundant places. [2023-11-29 00:39:09,036 INFO L231 Difference]: Finished difference. Result has 171 places, 192 transitions, 3062 flow [2023-11-29 00:39:09,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3062, PETRI_PLACES=171, PETRI_TRANSITIONS=192} [2023-11-29 00:39:09,036 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 132 predicate places. [2023-11-29 00:39:09,036 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 192 transitions, 3062 flow [2023-11-29 00:39:09,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.5) internal successors, (407), 22 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:09,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:09,036 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] [2023-11-29 00:39:09,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:39:09,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:09,237 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:09,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1378830902, now seen corresponding path program 11 times [2023-11-29 00:39:09,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:09,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048570912] [2023-11-29 00:39:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:09,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:09,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048570912] [2023-11-29 00:39:09,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048570912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940564064] [2023-11-29 00:39:09,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:39:09,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:09,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:09,349 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:09,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:39:09,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:39:09,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:09,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:39:09,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:09,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940564064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:09,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:09,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2023-11-29 00:39:09,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184110522] [2023-11-29 00:39:09,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:09,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:39:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:09,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:39:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:39:09,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:09,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 192 transitions, 3062 flow. Second operand has 20 states, 20 states have (on average 18.8) internal successors, (376), 20 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:09,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:09,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:09,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:10,034 INFO L124 PetriNetUnfolderBase]: 655/1347 cut-off events. [2023-11-29 00:39:10,034 INFO L125 PetriNetUnfolderBase]: For 13271/13279 co-relation queries the response was YES. [2023-11-29 00:39:10,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7435 conditions, 1347 events. 655/1347 cut-off events. For 13271/13279 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7801 event pairs, 107 based on Foata normal form. 4/1351 useless extension candidates. Maximal degree in co-relation 7378. Up to 706 conditions per place. [2023-11-29 00:39:10,042 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 113 selfloop transitions, 64 changer transitions 41/224 dead transitions. [2023-11-29 00:39:10,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 224 transitions, 3708 flow [2023-11-29 00:39:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:39:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:39:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 292 transitions. [2023-11-29 00:39:10,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6070686070686071 [2023-11-29 00:39:10,043 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 292 transitions. [2023-11-29 00:39:10,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 292 transitions. [2023-11-29 00:39:10,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:10,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 292 transitions. [2023-11-29 00:39:10,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 22.46153846153846) internal successors, (292), 13 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:10,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:10,045 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:10,045 INFO L175 Difference]: Start difference. First operand has 171 places, 192 transitions, 3062 flow. Second operand 13 states and 292 transitions. [2023-11-29 00:39:10,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 224 transitions, 3708 flow [2023-11-29 00:39:10,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 224 transitions, 3614 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-29 00:39:10,094 INFO L231 Difference]: Finished difference. Result has 176 places, 165 transitions, 2562 flow [2023-11-29 00:39:10,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2562, PETRI_PLACES=176, PETRI_TRANSITIONS=165} [2023-11-29 00:39:10,095 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 137 predicate places. [2023-11-29 00:39:10,095 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 165 transitions, 2562 flow [2023-11-29 00:39:10,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.8) internal successors, (376), 20 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:10,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:10,095 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] [2023-11-29 00:39:10,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:39:10,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:10,296 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:10,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash -972013248, now seen corresponding path program 12 times [2023-11-29 00:39:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321537875] [2023-11-29 00:39:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:10,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:10,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:10,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321537875] [2023-11-29 00:39:10,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321537875] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:10,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603996563] [2023-11-29 00:39:10,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:39:10,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:10,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:10,413 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:10,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:39:10,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 00:39:10,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:10,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:10,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:10,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:10,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603996563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:10,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:10,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2023-11-29 00:39:10,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095036961] [2023-11-29 00:39:10,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:10,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:39:10,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:10,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:39:10,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:39:10,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:10,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 165 transitions, 2562 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:10,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:10,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:10,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:11,568 INFO L124 PetriNetUnfolderBase]: 590/1278 cut-off events. [2023-11-29 00:39:11,569 INFO L125 PetriNetUnfolderBase]: For 12680/12682 co-relation queries the response was YES. [2023-11-29 00:39:11,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6751 conditions, 1278 events. 590/1278 cut-off events. For 12680/12682 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7569 event pairs, 49 based on Foata normal form. 15/1293 useless extension candidates. Maximal degree in co-relation 6694. Up to 334 conditions per place. [2023-11-29 00:39:11,580 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 81 selfloop transitions, 112 changer transitions 24/223 dead transitions. [2023-11-29 00:39:11,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 223 transitions, 3376 flow [2023-11-29 00:39:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:39:11,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 00:39:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 538 transitions. [2023-11-29 00:39:11,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816216216216217 [2023-11-29 00:39:11,582 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 538 transitions. [2023-11-29 00:39:11,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 538 transitions. [2023-11-29 00:39:11,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:11,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 538 transitions. [2023-11-29 00:39:11,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 21.52) internal successors, (538), 25 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:11,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 37.0) internal successors, (962), 26 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:11,584 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 37.0) internal successors, (962), 26 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:11,585 INFO L175 Difference]: Start difference. First operand has 176 places, 165 transitions, 2562 flow. Second operand 25 states and 538 transitions. [2023-11-29 00:39:11,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 223 transitions, 3376 flow [2023-11-29 00:39:11,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 223 transitions, 3106 flow, removed 16 selfloop flow, removed 18 redundant places. [2023-11-29 00:39:11,623 INFO L231 Difference]: Finished difference. Result has 180 places, 165 transitions, 2581 flow [2023-11-29 00:39:11,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2301, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2581, PETRI_PLACES=180, PETRI_TRANSITIONS=165} [2023-11-29 00:39:11,623 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 141 predicate places. [2023-11-29 00:39:11,623 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 165 transitions, 2581 flow [2023-11-29 00:39:11,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:11,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:11,623 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] [2023-11-29 00:39:11,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:39:11,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:11,824 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:11,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:11,824 INFO L85 PathProgramCache]: Analyzing trace with hash 340129468, now seen corresponding path program 13 times [2023-11-29 00:39:11,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:11,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466698715] [2023-11-29 00:39:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:11,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:11,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466698715] [2023-11-29 00:39:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466698715] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510503427] [2023-11-29 00:39:11,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:39:11,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:11,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:11,951 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:11,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:39:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:12,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:12,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:12,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:12,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510503427] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:12,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:12,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-11-29 00:39:12,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261186444] [2023-11-29 00:39:12,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:12,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:39:12,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:12,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:39:12,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:39:12,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:12,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 165 transitions, 2581 flow. Second operand has 21 states, 21 states have (on average 18.476190476190474) internal successors, (388), 21 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:12,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:12,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:12,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:12,988 INFO L124 PetriNetUnfolderBase]: 658/1476 cut-off events. [2023-11-29 00:39:12,988 INFO L125 PetriNetUnfolderBase]: For 12924/12946 co-relation queries the response was YES. [2023-11-29 00:39:12,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7561 conditions, 1476 events. 658/1476 cut-off events. For 12924/12946 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9554 event pairs, 40 based on Foata normal form. 13/1489 useless extension candidates. Maximal degree in co-relation 7506. Up to 389 conditions per place. [2023-11-29 00:39:12,996 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 91 selfloop transitions, 123 changer transitions 23/243 dead transitions. [2023-11-29 00:39:12,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 243 transitions, 3836 flow [2023-11-29 00:39:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 00:39:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 00:39:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 489 transitions. [2023-11-29 00:39:12,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6007371007371007 [2023-11-29 00:39:12,998 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 489 transitions. [2023-11-29 00:39:12,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 489 transitions. [2023-11-29 00:39:12,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:12,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 489 transitions. [2023-11-29 00:39:13,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 22.227272727272727) internal successors, (489), 22 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:13,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 37.0) internal successors, (851), 23 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:13,001 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 37.0) internal successors, (851), 23 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:13,001 INFO L175 Difference]: Start difference. First operand has 180 places, 165 transitions, 2581 flow. Second operand 22 states and 489 transitions. [2023-11-29 00:39:13,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 243 transitions, 3836 flow [2023-11-29 00:39:13,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 243 transitions, 3576 flow, removed 27 selfloop flow, removed 19 redundant places. [2023-11-29 00:39:13,060 INFO L231 Difference]: Finished difference. Result has 181 places, 184 transitions, 2955 flow [2023-11-29 00:39:13,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2366, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2955, PETRI_PLACES=181, PETRI_TRANSITIONS=184} [2023-11-29 00:39:13,060 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 142 predicate places. [2023-11-29 00:39:13,060 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 184 transitions, 2955 flow [2023-11-29 00:39:13,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.476190476190474) internal successors, (388), 21 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:13,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:13,061 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] [2023-11-29 00:39:13,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:39:13,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:13,261 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:13,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:13,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1739502662, now seen corresponding path program 14 times [2023-11-29 00:39:13,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:13,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559859256] [2023-11-29 00:39:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:13,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559859256] [2023-11-29 00:39:13,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559859256] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151005404] [2023-11-29 00:39:13,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:39:13,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:13,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:13,363 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:13,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:39:13,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:39:13,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:13,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:13,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:13,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:13,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151005404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:13,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-29 00:39:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040477330] [2023-11-29 00:39:13,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:13,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:39:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:39:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:39:13,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:13,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 184 transitions, 2955 flow. Second operand has 24 states, 24 states have (on average 18.458333333333332) internal successors, (443), 24 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:13,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:13,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:13,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:14,605 INFO L124 PetriNetUnfolderBase]: 933/2139 cut-off events. [2023-11-29 00:39:14,605 INFO L125 PetriNetUnfolderBase]: For 18772/18800 co-relation queries the response was YES. [2023-11-29 00:39:14,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10834 conditions, 2139 events. 933/2139 cut-off events. For 18772/18800 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15375 event pairs, 161 based on Foata normal form. 28/2167 useless extension candidates. Maximal degree in co-relation 10778. Up to 755 conditions per place. [2023-11-29 00:39:14,617 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 143 selfloop transitions, 92 changer transitions 86/327 dead transitions. [2023-11-29 00:39:14,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 327 transitions, 5452 flow [2023-11-29 00:39:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 00:39:14,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 00:39:14,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 613 transitions. [2023-11-29 00:39:14,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916988416988417 [2023-11-29 00:39:14,618 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 613 transitions. [2023-11-29 00:39:14,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 613 transitions. [2023-11-29 00:39:14,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:14,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 613 transitions. [2023-11-29 00:39:14,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 21.892857142857142) internal successors, (613), 28 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:14,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 37.0) internal successors, (1073), 29 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:14,620 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 37.0) internal successors, (1073), 29 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:14,620 INFO L175 Difference]: Start difference. First operand has 181 places, 184 transitions, 2955 flow. Second operand 28 states and 613 transitions. [2023-11-29 00:39:14,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 327 transitions, 5452 flow [2023-11-29 00:39:14,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 327 transitions, 4878 flow, removed 99 selfloop flow, removed 10 redundant places. [2023-11-29 00:39:14,684 INFO L231 Difference]: Finished difference. Result has 203 places, 172 transitions, 2764 flow [2023-11-29 00:39:14,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2764, PETRI_PLACES=203, PETRI_TRANSITIONS=172} [2023-11-29 00:39:14,684 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 164 predicate places. [2023-11-29 00:39:14,684 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 172 transitions, 2764 flow [2023-11-29 00:39:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.458333333333332) internal successors, (443), 24 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:14,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:14,685 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] [2023-11-29 00:39:14,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:39:14,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:14,885 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:14,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1435471996, now seen corresponding path program 15 times [2023-11-29 00:39:14,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:14,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176095536] [2023-11-29 00:39:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:14,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:14,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:14,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176095536] [2023-11-29 00:39:14,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176095536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:14,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238968842] [2023-11-29 00:39:14,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:39:14,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:14,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:14,998 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:14,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:39:15,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:39:15,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:15,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:15,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:15,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:15,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238968842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:15,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:15,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-11-29 00:39:15,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119677102] [2023-11-29 00:39:15,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:15,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:39:15,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:15,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:39:15,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:39:15,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:15,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 172 transitions, 2764 flow. Second operand has 21 states, 21 states have (on average 18.523809523809526) internal successors, (389), 21 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:15,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:15,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:15,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:16,150 INFO L124 PetriNetUnfolderBase]: 743/1695 cut-off events. [2023-11-29 00:39:16,150 INFO L125 PetriNetUnfolderBase]: For 14143/14155 co-relation queries the response was YES. [2023-11-29 00:39:16,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8082 conditions, 1695 events. 743/1695 cut-off events. For 14143/14155 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11375 event pairs, 57 based on Foata normal form. 8/1703 useless extension candidates. Maximal degree in co-relation 8033. Up to 473 conditions per place. [2023-11-29 00:39:16,174 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 79 selfloop transitions, 108 changer transitions 42/235 dead transitions. [2023-11-29 00:39:16,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 235 transitions, 3501 flow [2023-11-29 00:39:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:39:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 00:39:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 545 transitions. [2023-11-29 00:39:16,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5891891891891892 [2023-11-29 00:39:16,176 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 545 transitions. [2023-11-29 00:39:16,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 545 transitions. [2023-11-29 00:39:16,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:16,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 545 transitions. [2023-11-29 00:39:16,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 21.8) internal successors, (545), 25 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:16,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 37.0) internal successors, (962), 26 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:16,179 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 37.0) internal successors, (962), 26 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:16,180 INFO L175 Difference]: Start difference. First operand has 203 places, 172 transitions, 2764 flow. Second operand 25 states and 545 transitions. [2023-11-29 00:39:16,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 235 transitions, 3501 flow [2023-11-29 00:39:16,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 235 transitions, 3185 flow, removed 49 selfloop flow, removed 21 redundant places. [2023-11-29 00:39:16,223 INFO L231 Difference]: Finished difference. Result has 196 places, 162 transitions, 2547 flow [2023-11-29 00:39:16,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2547, PETRI_PLACES=196, PETRI_TRANSITIONS=162} [2023-11-29 00:39:16,224 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 157 predicate places. [2023-11-29 00:39:16,224 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 162 transitions, 2547 flow [2023-11-29 00:39:16,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.523809523809526) internal successors, (389), 21 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:16,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:16,224 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] [2023-11-29 00:39:16,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:39:16,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:16,425 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:16,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:16,425 INFO L85 PathProgramCache]: Analyzing trace with hash -34893734, now seen corresponding path program 16 times [2023-11-29 00:39:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:16,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290819592] [2023-11-29 00:39:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:16,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:16,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290819592] [2023-11-29 00:39:16,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290819592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:16,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43057850] [2023-11-29 00:39:16,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:39:16,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:16,534 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:16,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:39:16,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:39:16,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:16,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:16,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:16,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:16,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43057850] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:16,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:16,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:39:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27681079] [2023-11-29 00:39:16,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:16,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:39:16,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:39:16,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:39:16,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:16,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 162 transitions, 2547 flow. Second operand has 23 states, 23 states have (on average 18.47826086956522) internal successors, (425), 23 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:16,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:16,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:16,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:17,609 INFO L124 PetriNetUnfolderBase]: 740/1681 cut-off events. [2023-11-29 00:39:17,609 INFO L125 PetriNetUnfolderBase]: For 13552/13574 co-relation queries the response was YES. [2023-11-29 00:39:17,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 1681 events. 740/1681 cut-off events. For 13552/13574 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11127 event pairs, 71 based on Foata normal form. 17/1697 useless extension candidates. Maximal degree in co-relation 8043. Up to 481 conditions per place. [2023-11-29 00:39:17,618 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 91 selfloop transitions, 103 changer transitions 30/230 dead transitions. [2023-11-29 00:39:17,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 230 transitions, 3828 flow [2023-11-29 00:39:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:39:17,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 00:39:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 374 transitions. [2023-11-29 00:39:17,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2023-11-29 00:39:17,619 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 374 transitions. [2023-11-29 00:39:17,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 374 transitions. [2023-11-29 00:39:17,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:17,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 374 transitions. [2023-11-29 00:39:17,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 22.0) internal successors, (374), 17 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:17,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 37.0) internal successors, (666), 18 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:17,621 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 37.0) internal successors, (666), 18 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:17,621 INFO L175 Difference]: Start difference. First operand has 196 places, 162 transitions, 2547 flow. Second operand 17 states and 374 transitions. [2023-11-29 00:39:17,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 230 transitions, 3828 flow [2023-11-29 00:39:17,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 230 transitions, 3553 flow, removed 17 selfloop flow, removed 19 redundant places. [2023-11-29 00:39:17,660 INFO L231 Difference]: Finished difference. Result has 185 places, 172 transitions, 2808 flow [2023-11-29 00:39:17,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2808, PETRI_PLACES=185, PETRI_TRANSITIONS=172} [2023-11-29 00:39:17,661 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2023-11-29 00:39:17,661 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 172 transitions, 2808 flow [2023-11-29 00:39:17,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.47826086956522) internal successors, (425), 23 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:17,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:17,661 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] [2023-11-29 00:39:17,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:39:17,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-29 00:39:17,861 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:17,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash -21170938, now seen corresponding path program 17 times [2023-11-29 00:39:17,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:17,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702529903] [2023-11-29 00:39:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:17,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702529903] [2023-11-29 00:39:17,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702529903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765831802] [2023-11-29 00:39:17,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:39:17,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:17,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:17,960 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:17,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:39:18,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:39:18,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:18,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:39:18,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:18,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:18,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765831802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:18,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:18,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2023-11-29 00:39:18,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772028514] [2023-11-29 00:39:18,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:18,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:39:18,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:39:18,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:39:18,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:18,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 172 transitions, 2808 flow. Second operand has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:18,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:18,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:18,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:18,677 INFO L124 PetriNetUnfolderBase]: 820/1876 cut-off events. [2023-11-29 00:39:18,677 INFO L125 PetriNetUnfolderBase]: For 14968/14968 co-relation queries the response was YES. [2023-11-29 00:39:18,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8915 conditions, 1876 events. 820/1876 cut-off events. For 14968/14968 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12633 event pairs, 210 based on Foata normal form. 10/1885 useless extension candidates. Maximal degree in co-relation 8865. Up to 920 conditions per place. [2023-11-29 00:39:18,687 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 107 selfloop transitions, 71 changer transitions 42/226 dead transitions. [2023-11-29 00:39:18,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 226 transitions, 3924 flow [2023-11-29 00:39:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:39:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:39:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 328 transitions. [2023-11-29 00:39:18,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590990990990991 [2023-11-29 00:39:18,688 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 328 transitions. [2023-11-29 00:39:18,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 328 transitions. [2023-11-29 00:39:18,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:18,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 328 transitions. [2023-11-29 00:39:18,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 21.866666666666667) internal successors, (328), 15 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:18,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 37.0) internal successors, (592), 16 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:18,690 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 37.0) internal successors, (592), 16 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:18,690 INFO L175 Difference]: Start difference. First operand has 185 places, 172 transitions, 2808 flow. Second operand 15 states and 328 transitions. [2023-11-29 00:39:18,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 226 transitions, 3924 flow [2023-11-29 00:39:18,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 226 transitions, 3578 flow, removed 33 selfloop flow, removed 12 redundant places. [2023-11-29 00:39:18,739 INFO L231 Difference]: Finished difference. Result has 187 places, 164 transitions, 2561 flow [2023-11-29 00:39:18,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2561, PETRI_PLACES=187, PETRI_TRANSITIONS=164} [2023-11-29 00:39:18,739 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2023-11-29 00:39:18,740 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 164 transitions, 2561 flow [2023-11-29 00:39:18,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:18,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:18,740 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] [2023-11-29 00:39:18,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:39:18,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:18,940 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:18,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:18,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1438812432, now seen corresponding path program 18 times [2023-11-29 00:39:18,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:18,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111323570] [2023-11-29 00:39:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:18,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:19,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:19,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111323570] [2023-11-29 00:39:19,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111323570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:19,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468172395] [2023-11-29 00:39:19,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:39:19,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:19,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:19,045 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:19,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:39:19,117 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 00:39:19,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:19,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:19,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:19,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:19,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468172395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:19,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:19,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-11-29 00:39:19,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30162354] [2023-11-29 00:39:19,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:19,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:39:19,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:19,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:39:19,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:39:19,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:19,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 164 transitions, 2561 flow. Second operand has 21 states, 21 states have (on average 18.476190476190474) internal successors, (388), 21 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:19,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:19,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:19,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:20,140 INFO L124 PetriNetUnfolderBase]: 720/1632 cut-off events. [2023-11-29 00:39:20,140 INFO L125 PetriNetUnfolderBase]: For 15066/15072 co-relation queries the response was YES. [2023-11-29 00:39:20,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8124 conditions, 1632 events. 720/1632 cut-off events. For 15066/15072 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10539 event pairs, 33 based on Foata normal form. 6/1638 useless extension candidates. Maximal degree in co-relation 8074. Up to 724 conditions per place. [2023-11-29 00:39:20,150 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 99 selfloop transitions, 114 changer transitions 59/278 dead transitions. [2023-11-29 00:39:20,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 278 transitions, 4519 flow [2023-11-29 00:39:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:39:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 00:39:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 535 transitions. [2023-11-29 00:39:20,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024774774774775 [2023-11-29 00:39:20,152 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 535 transitions. [2023-11-29 00:39:20,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 535 transitions. [2023-11-29 00:39:20,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:20,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 535 transitions. [2023-11-29 00:39:20,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 22.291666666666668) internal successors, (535), 24 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:20,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 37.0) internal successors, (925), 25 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:20,155 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 37.0) internal successors, (925), 25 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:20,155 INFO L175 Difference]: Start difference. First operand has 187 places, 164 transitions, 2561 flow. Second operand 24 states and 535 transitions. [2023-11-29 00:39:20,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 278 transitions, 4519 flow [2023-11-29 00:39:20,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 278 transitions, 4290 flow, removed 27 selfloop flow, removed 12 redundant places. [2023-11-29 00:39:20,227 INFO L231 Difference]: Finished difference. Result has 201 places, 183 transitions, 3129 flow [2023-11-29 00:39:20,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3129, PETRI_PLACES=201, PETRI_TRANSITIONS=183} [2023-11-29 00:39:20,227 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 162 predicate places. [2023-11-29 00:39:20,228 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 183 transitions, 3129 flow [2023-11-29 00:39:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.476190476190474) internal successors, (388), 21 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:20,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:20,228 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] [2023-11-29 00:39:20,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:39:20,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-11-29 00:39:20,428 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:20,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:20,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1518314214, now seen corresponding path program 19 times [2023-11-29 00:39:20,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:20,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118891448] [2023-11-29 00:39:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:20,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:20,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118891448] [2023-11-29 00:39:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118891448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234568837] [2023-11-29 00:39:20,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:39:20,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:20,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:20,540 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:20,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:39:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:20,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:20,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:20,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:20,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234568837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:20,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:20,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-11-29 00:39:20,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502568083] [2023-11-29 00:39:20,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:20,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 00:39:20,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:20,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 00:39:20,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:39:20,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:20,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 183 transitions, 3129 flow. Second operand has 22 states, 22 states have (on average 18.5) internal successors, (407), 22 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:20,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:20,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:20,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:21,731 INFO L124 PetriNetUnfolderBase]: 739/1729 cut-off events. [2023-11-29 00:39:21,731 INFO L125 PetriNetUnfolderBase]: For 16951/16953 co-relation queries the response was YES. [2023-11-29 00:39:21,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8534 conditions, 1729 events. 739/1729 cut-off events. For 16951/16953 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11552 event pairs, 180 based on Foata normal form. 7/1736 useless extension candidates. Maximal degree in co-relation 8479. Up to 843 conditions per place. [2023-11-29 00:39:21,740 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 131 selfloop transitions, 71 changer transitions 47/255 dead transitions. [2023-11-29 00:39:21,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 255 transitions, 4284 flow [2023-11-29 00:39:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:39:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 00:39:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 440 transitions. [2023-11-29 00:39:21,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2023-11-29 00:39:21,741 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 440 transitions. [2023-11-29 00:39:21,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 440 transitions. [2023-11-29 00:39:21,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:21,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 440 transitions. [2023-11-29 00:39:21,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 22.0) internal successors, (440), 20 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:21,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 37.0) internal successors, (777), 21 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:21,743 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 37.0) internal successors, (777), 21 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:21,743 INFO L175 Difference]: Start difference. First operand has 201 places, 183 transitions, 3129 flow. Second operand 20 states and 440 transitions. [2023-11-29 00:39:21,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 255 transitions, 4284 flow [2023-11-29 00:39:21,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 255 transitions, 4085 flow, removed 81 selfloop flow, removed 6 redundant places. [2023-11-29 00:39:21,795 INFO L231 Difference]: Finished difference. Result has 214 places, 179 transitions, 3015 flow [2023-11-29 00:39:21,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2933, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3015, PETRI_PLACES=214, PETRI_TRANSITIONS=179} [2023-11-29 00:39:21,795 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 175 predicate places. [2023-11-29 00:39:21,795 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 179 transitions, 3015 flow [2023-11-29 00:39:21,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.5) internal successors, (407), 22 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:21,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:21,796 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] [2023-11-29 00:39:21,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 00:39:21,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:21,996 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:21,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash 668626988, now seen corresponding path program 20 times [2023-11-29 00:39:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:21,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141939112] [2023-11-29 00:39:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:21,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:22,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141939112] [2023-11-29 00:39:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141939112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094036133] [2023-11-29 00:39:22,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:39:22,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:22,101 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:22,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:39:22,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:39:22,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:22,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:22,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:22,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:22,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094036133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:22,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:22,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:39:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286061890] [2023-11-29 00:39:22,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:22,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:39:22,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:39:22,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:39:22,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:22,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 179 transitions, 3015 flow. Second operand has 23 states, 23 states have (on average 18.434782608695652) internal successors, (424), 23 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:22,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:22,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:22,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:23,004 INFO L124 PetriNetUnfolderBase]: 638/1526 cut-off events. [2023-11-29 00:39:23,004 INFO L125 PetriNetUnfolderBase]: For 16335/16337 co-relation queries the response was YES. [2023-11-29 00:39:23,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7750 conditions, 1526 events. 638/1526 cut-off events. For 16335/16337 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10015 event pairs, 190 based on Foata normal form. 3/1529 useless extension candidates. Maximal degree in co-relation 7693. Up to 906 conditions per place. [2023-11-29 00:39:23,017 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 137 selfloop transitions, 44 changer transitions 27/214 dead transitions. [2023-11-29 00:39:23,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 214 transitions, 3878 flow [2023-11-29 00:39:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:39:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:39:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 261 transitions. [2023-11-29 00:39:23,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2023-11-29 00:39:23,018 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 261 transitions. [2023-11-29 00:39:23,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 261 transitions. [2023-11-29 00:39:23,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:23,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 261 transitions. [2023-11-29 00:39:23,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.75) internal successors, (261), 12 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:23,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 37.0) internal successors, (481), 13 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:23,019 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 37.0) internal successors, (481), 13 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:23,020 INFO L175 Difference]: Start difference. First operand has 214 places, 179 transitions, 3015 flow. Second operand 12 states and 261 transitions. [2023-11-29 00:39:23,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 214 transitions, 3878 flow [2023-11-29 00:39:23,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 214 transitions, 3670 flow, removed 22 selfloop flow, removed 15 redundant places. [2023-11-29 00:39:23,096 INFO L231 Difference]: Finished difference. Result has 206 places, 175 transitions, 2861 flow [2023-11-29 00:39:23,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2861, PETRI_PLACES=206, PETRI_TRANSITIONS=175} [2023-11-29 00:39:23,096 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 167 predicate places. [2023-11-29 00:39:23,096 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 175 transitions, 2861 flow [2023-11-29 00:39:23,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.434782608695652) internal successors, (424), 23 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:23,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:23,097 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] [2023-11-29 00:39:23,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 00:39:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:23,297 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:23,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1845800218, now seen corresponding path program 21 times [2023-11-29 00:39:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:23,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030160983] [2023-11-29 00:39:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:23,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:23,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030160983] [2023-11-29 00:39:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030160983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233737335] [2023-11-29 00:39:23,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:39:23,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:23,404 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:23,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 00:39:23,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:39:23,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:23,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:23,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:23,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:23,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233737335] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:23,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:23,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:39:23,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534665703] [2023-11-29 00:39:23,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:23,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:39:23,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:23,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:39:23,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:39:23,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:23,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 175 transitions, 2861 flow. Second operand has 23 states, 23 states have (on average 18.434782608695652) internal successors, (424), 23 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:23,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:23,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:23,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:24,391 INFO L124 PetriNetUnfolderBase]: 722/1743 cut-off events. [2023-11-29 00:39:24,391 INFO L125 PetriNetUnfolderBase]: For 18383/18385 co-relation queries the response was YES. [2023-11-29 00:39:24,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 1743 events. 722/1743 cut-off events. For 18383/18385 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12077 event pairs, 166 based on Foata normal form. 7/1750 useless extension candidates. Maximal degree in co-relation 8581. Up to 679 conditions per place. [2023-11-29 00:39:24,402 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 104 selfloop transitions, 86 changer transitions 41/237 dead transitions. [2023-11-29 00:39:24,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 237 transitions, 4235 flow [2023-11-29 00:39:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:39:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:39:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 277 transitions. [2023-11-29 00:39:24,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6238738738738738 [2023-11-29 00:39:24,402 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 277 transitions. [2023-11-29 00:39:24,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 277 transitions. [2023-11-29 00:39:24,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:24,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 277 transitions. [2023-11-29 00:39:24,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:24,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 37.0) internal successors, (481), 13 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:24,404 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 37.0) internal successors, (481), 13 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:24,404 INFO L175 Difference]: Start difference. First operand has 206 places, 175 transitions, 2861 flow. Second operand 12 states and 277 transitions. [2023-11-29 00:39:24,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 237 transitions, 4235 flow [2023-11-29 00:39:24,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 237 transitions, 4085 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-11-29 00:39:24,472 INFO L231 Difference]: Finished difference. Result has 206 places, 170 transitions, 2926 flow [2023-11-29 00:39:24,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2926, PETRI_PLACES=206, PETRI_TRANSITIONS=170} [2023-11-29 00:39:24,473 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 167 predicate places. [2023-11-29 00:39:24,473 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 170 transitions, 2926 flow [2023-11-29 00:39:24,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.434782608695652) internal successors, (424), 23 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:24,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:24,473 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] [2023-11-29 00:39:24,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 00:39:24,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-11-29 00:39:24,673 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:24,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1779737660, now seen corresponding path program 22 times [2023-11-29 00:39:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258855765] [2023-11-29 00:39:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:24,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:24,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258855765] [2023-11-29 00:39:24,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258855765] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:24,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153490392] [2023-11-29 00:39:24,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:39:24,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:24,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:24,796 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:24,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 00:39:24,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:39:24,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:24,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:24,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:24,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:25,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153490392] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:25,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:25,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:39:25,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078118129] [2023-11-29 00:39:25,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:25,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:39:25,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:25,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:39:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:39:25,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:25,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 170 transitions, 2926 flow. Second operand has 23 states, 23 states have (on average 18.434782608695652) internal successors, (424), 23 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:25,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:25,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:25,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:25,769 INFO L124 PetriNetUnfolderBase]: 615/1453 cut-off events. [2023-11-29 00:39:25,770 INFO L125 PetriNetUnfolderBase]: For 16799/16809 co-relation queries the response was YES. [2023-11-29 00:39:25,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 1453 events. 615/1453 cut-off events. For 16799/16809 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9395 event pairs, 76 based on Foata normal form. 9/1462 useless extension candidates. Maximal degree in co-relation 7482. Up to 474 conditions per place. [2023-11-29 00:39:25,779 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 80 selfloop transitions, 76 changer transitions 36/198 dead transitions. [2023-11-29 00:39:25,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 198 transitions, 3551 flow [2023-11-29 00:39:25,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:39:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:39:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 323 transitions. [2023-11-29 00:39:25,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581981981981982 [2023-11-29 00:39:25,780 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 323 transitions. [2023-11-29 00:39:25,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 323 transitions. [2023-11-29 00:39:25,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:25,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 323 transitions. [2023-11-29 00:39:25,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 21.533333333333335) internal successors, (323), 15 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:25,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 37.0) internal successors, (592), 16 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:25,781 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 37.0) internal successors, (592), 16 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:25,781 INFO L175 Difference]: Start difference. First operand has 206 places, 170 transitions, 2926 flow. Second operand 15 states and 323 transitions. [2023-11-29 00:39:25,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 198 transitions, 3551 flow [2023-11-29 00:39:25,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 198 transitions, 3390 flow, removed 21 selfloop flow, removed 11 redundant places. [2023-11-29 00:39:25,827 INFO L231 Difference]: Finished difference. Result has 208 places, 147 transitions, 2471 flow [2023-11-29 00:39:25,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2471, PETRI_PLACES=208, PETRI_TRANSITIONS=147} [2023-11-29 00:39:25,827 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 169 predicate places. [2023-11-29 00:39:25,827 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 147 transitions, 2471 flow [2023-11-29 00:39:25,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.434782608695652) internal successors, (424), 23 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:25,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:25,827 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] [2023-11-29 00:39:25,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 00:39:26,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-11-29 00:39:26,028 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:26,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1422569228, now seen corresponding path program 23 times [2023-11-29 00:39:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:26,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382062469] [2023-11-29 00:39:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:26,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:26,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382062469] [2023-11-29 00:39:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382062469] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399773610] [2023-11-29 00:39:26,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:39:26,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:26,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:26,128 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:26,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 00:39:26,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:39:26,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:26,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:39:26,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:26,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:26,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399773610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:26,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2023-11-29 00:39:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593885827] [2023-11-29 00:39:26,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:26,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:39:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:39:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:39:26,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:26,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 147 transitions, 2471 flow. Second operand has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:26,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:26,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:26,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:26,715 INFO L124 PetriNetUnfolderBase]: 550/1275 cut-off events. [2023-11-29 00:39:26,715 INFO L125 PetriNetUnfolderBase]: For 14225/14233 co-relation queries the response was YES. [2023-11-29 00:39:26,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6594 conditions, 1275 events. 550/1275 cut-off events. For 14225/14233 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7934 event pairs, 73 based on Foata normal form. 17/1292 useless extension candidates. Maximal degree in co-relation 6539. Up to 296 conditions per place. [2023-11-29 00:39:26,722 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 76 selfloop transitions, 51 changer transitions 42/175 dead transitions. [2023-11-29 00:39:26,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 175 transitions, 3071 flow [2023-11-29 00:39:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:39:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:39:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 268 transitions. [2023-11-29 00:39:26,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2023-11-29 00:39:26,723 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 268 transitions. [2023-11-29 00:39:26,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 268 transitions. [2023-11-29 00:39:26,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:26,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 268 transitions. [2023-11-29 00:39:26,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:26,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 37.0) internal successors, (481), 13 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:26,724 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 37.0) internal successors, (481), 13 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:26,724 INFO L175 Difference]: Start difference. First operand has 208 places, 147 transitions, 2471 flow. Second operand 12 states and 268 transitions. [2023-11-29 00:39:26,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 175 transitions, 3071 flow [2023-11-29 00:39:26,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 175 transitions, 2877 flow, removed 14 selfloop flow, removed 16 redundant places. [2023-11-29 00:39:26,760 INFO L231 Difference]: Finished difference. Result has 193 places, 115 transitions, 1827 flow [2023-11-29 00:39:26,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1827, PETRI_PLACES=193, PETRI_TRANSITIONS=115} [2023-11-29 00:39:26,760 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 154 predicate places. [2023-11-29 00:39:26,761 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 115 transitions, 1827 flow [2023-11-29 00:39:26,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:26,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:26,761 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] [2023-11-29 00:39:26,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 00:39:26,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-29 00:39:26,961 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:26,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:26,961 INFO L85 PathProgramCache]: Analyzing trace with hash 600649106, now seen corresponding path program 24 times [2023-11-29 00:39:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:26,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53558161] [2023-11-29 00:39:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:26,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:27,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:27,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53558161] [2023-11-29 00:39:27,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53558161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:27,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594319239] [2023-11-29 00:39:27,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:39:27,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:27,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:27,064 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:27,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 00:39:27,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 00:39:27,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:27,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:39:27,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:27,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:27,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594319239] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:27,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:27,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 00:39:27,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338454494] [2023-11-29 00:39:27,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:27,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:39:27,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:39:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:39:27,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:27,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 115 transitions, 1827 flow. Second operand has 23 states, 23 states have (on average 18.47826086956522) internal successors, (425), 23 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:27,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:27,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:27,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:28,197 INFO L124 PetriNetUnfolderBase]: 453/1070 cut-off events. [2023-11-29 00:39:28,197 INFO L125 PetriNetUnfolderBase]: For 14114/14122 co-relation queries the response was YES. [2023-11-29 00:39:28,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5918 conditions, 1070 events. 453/1070 cut-off events. For 14114/14122 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6380 event pairs, 46 based on Foata normal form. 6/1076 useless extension candidates. Maximal degree in co-relation 5864. Up to 212 conditions per place. [2023-11-29 00:39:28,205 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 102 selfloop transitions, 75 changer transitions 42/225 dead transitions. [2023-11-29 00:39:28,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 225 transitions, 3502 flow [2023-11-29 00:39:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:39:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 00:39:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 521 transitions. [2023-11-29 00:39:28,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5867117117117117 [2023-11-29 00:39:28,207 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 521 transitions. [2023-11-29 00:39:28,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 521 transitions. [2023-11-29 00:39:28,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:28,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 521 transitions. [2023-11-29 00:39:28,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 21.708333333333332) internal successors, (521), 24 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:28,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 37.0) internal successors, (925), 25 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:28,210 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 37.0) internal successors, (925), 25 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:28,210 INFO L175 Difference]: Start difference. First operand has 193 places, 115 transitions, 1827 flow. Second operand 24 states and 521 transitions. [2023-11-29 00:39:28,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 225 transitions, 3502 flow [2023-11-29 00:39:28,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 225 transitions, 2993 flow, removed 48 selfloop flow, removed 24 redundant places. [2023-11-29 00:39:28,248 INFO L231 Difference]: Finished difference. Result has 186 places, 137 transitions, 2188 flow [2023-11-29 00:39:28,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2188, PETRI_PLACES=186, PETRI_TRANSITIONS=137} [2023-11-29 00:39:28,248 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 147 predicate places. [2023-11-29 00:39:28,248 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 137 transitions, 2188 flow [2023-11-29 00:39:28,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.47826086956522) internal successors, (425), 23 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:28,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:28,249 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:28,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 00:39:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-29 00:39:28,449 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:28,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1572170021, now seen corresponding path program 25 times [2023-11-29 00:39:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:28,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343930264] [2023-11-29 00:39:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:28,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:28,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343930264] [2023-11-29 00:39:28,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343930264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:28,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980752246] [2023-11-29 00:39:28,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:39:28,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:28,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:28,492 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:28,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 00:39:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:28,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:39:28,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:28,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:28,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980752246] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:28,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:28,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-29 00:39:28,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473561321] [2023-11-29 00:39:28,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:28,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:39:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:28,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:39:28,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:39:28,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:39:28,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 137 transitions, 2188 flow. Second operand has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:28,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:28,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:39:28,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:28,855 INFO L124 PetriNetUnfolderBase]: 289/775 cut-off events. [2023-11-29 00:39:28,855 INFO L125 PetriNetUnfolderBase]: For 8156/8156 co-relation queries the response was YES. [2023-11-29 00:39:28,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4198 conditions, 775 events. 289/775 cut-off events. For 8156/8156 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4684 event pairs, 70 based on Foata normal form. 4/759 useless extension candidates. Maximal degree in co-relation 4148. Up to 272 conditions per place. [2023-11-29 00:39:28,860 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 76 selfloop transitions, 49 changer transitions 0/168 dead transitions. [2023-11-29 00:39:28,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 168 transitions, 2567 flow [2023-11-29 00:39:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:39:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:39:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 329 transitions. [2023-11-29 00:39:28,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6351351351351351 [2023-11-29 00:39:28,861 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 329 transitions. [2023-11-29 00:39:28,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 329 transitions. [2023-11-29 00:39:28,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:28,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 329 transitions. [2023-11-29 00:39:28,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 23.5) internal successors, (329), 14 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:28,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:28,863 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:28,863 INFO L175 Difference]: Start difference. First operand has 186 places, 137 transitions, 2188 flow. Second operand 14 states and 329 transitions. [2023-11-29 00:39:28,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 168 transitions, 2567 flow [2023-11-29 00:39:28,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 168 transitions, 2419 flow, removed 14 selfloop flow, removed 13 redundant places. [2023-11-29 00:39:28,889 INFO L231 Difference]: Finished difference. Result has 170 places, 140 transitions, 2187 flow [2023-11-29 00:39:28,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2187, PETRI_PLACES=170, PETRI_TRANSITIONS=140} [2023-11-29 00:39:28,890 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2023-11-29 00:39:28,890 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 140 transitions, 2187 flow [2023-11-29 00:39:28,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:28,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:28,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:28,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 00:39:29,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-29 00:39:29,091 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:29,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:29,091 INFO L85 PathProgramCache]: Analyzing trace with hash -545633140, now seen corresponding path program 26 times [2023-11-29 00:39:29,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:29,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713996088] [2023-11-29 00:39:29,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:29,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:29,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:29,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713996088] [2023-11-29 00:39:29,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713996088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:29,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159756766] [2023-11-29 00:39:29,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:39:29,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:29,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:29,129 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:29,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 00:39:29,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:39:29,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:29,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:39:29,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:29,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:29,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159756766] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:29,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:29,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-29 00:39:29,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929848634] [2023-11-29 00:39:29,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:29,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:39:29,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:29,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:39:29,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:39:29,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2023-11-29 00:39:29,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 140 transitions, 2187 flow. Second operand has 11 states, 11 states have (on average 21.0) internal successors, (231), 11 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:29,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:29,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2023-11-29 00:39:29,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:29,532 INFO L124 PetriNetUnfolderBase]: 257/672 cut-off events. [2023-11-29 00:39:29,533 INFO L125 PetriNetUnfolderBase]: For 7355/7357 co-relation queries the response was YES. [2023-11-29 00:39:29,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3713 conditions, 672 events. 257/672 cut-off events. For 7355/7357 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3711 event pairs, 68 based on Foata normal form. 20/678 useless extension candidates. Maximal degree in co-relation 3665. Up to 207 conditions per place. [2023-11-29 00:39:29,536 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 85 selfloop transitions, 42 changer transitions 11/167 dead transitions. [2023-11-29 00:39:29,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 167 transitions, 2518 flow [2023-11-29 00:39:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:39:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:39:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 336 transitions. [2023-11-29 00:39:29,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2023-11-29 00:39:29,537 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 336 transitions. [2023-11-29 00:39:29,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 336 transitions. [2023-11-29 00:39:29,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:29,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 336 transitions. [2023-11-29 00:39:29,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 24.0) internal successors, (336), 14 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:29,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:29,539 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:29,539 INFO L175 Difference]: Start difference. First operand has 170 places, 140 transitions, 2187 flow. Second operand 14 states and 336 transitions. [2023-11-29 00:39:29,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 167 transitions, 2518 flow [2023-11-29 00:39:29,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 167 transitions, 2407 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-11-29 00:39:29,569 INFO L231 Difference]: Finished difference. Result has 182 places, 129 transitions, 1985 flow [2023-11-29 00:39:29,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1985, PETRI_PLACES=182, PETRI_TRANSITIONS=129} [2023-11-29 00:39:29,569 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2023-11-29 00:39:29,570 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 129 transitions, 1985 flow [2023-11-29 00:39:29,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.0) internal successors, (231), 11 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:29,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:29,570 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:29,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 00:39:29,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-29 00:39:29,770 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:29,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash 976683203, now seen corresponding path program 27 times [2023-11-29 00:39:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10404730] [2023-11-29 00:39:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:29,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:29,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10404730] [2023-11-29 00:39:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10404730] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:29,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094097727] [2023-11-29 00:39:29,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:39:29,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:29,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:29,892 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:29,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 00:39:29,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:39:29,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:29,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:39:29,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:39:30,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:39:30,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094097727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:39:30,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:39:30,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2023-11-29 00:39:30,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743228071] [2023-11-29 00:39:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:39:30,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:39:30,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:30,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:39:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:39:30,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:30,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 129 transitions, 1985 flow. Second operand has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:30,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:30,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:30,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:30,232 INFO L124 PetriNetUnfolderBase]: 317/732 cut-off events. [2023-11-29 00:39:30,232 INFO L125 PetriNetUnfolderBase]: For 6521/6531 co-relation queries the response was YES. [2023-11-29 00:39:30,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 732 events. 317/732 cut-off events. For 6521/6531 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3805 event pairs, 56 based on Foata normal form. 10/742 useless extension candidates. Maximal degree in co-relation 4007. Up to 203 conditions per place. [2023-11-29 00:39:30,237 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 50 selfloop transitions, 14 changer transitions 75/145 dead transitions. [2023-11-29 00:39:30,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 145 transitions, 2322 flow [2023-11-29 00:39:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:39:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:39:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2023-11-29 00:39:30,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975975975975976 [2023-11-29 00:39:30,239 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 199 transitions. [2023-11-29 00:39:30,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 199 transitions. [2023-11-29 00:39:30,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:30,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 199 transitions. [2023-11-29 00:39:30,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 22.11111111111111) internal successors, (199), 9 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:30,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:30,240 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:30,240 INFO L175 Difference]: Start difference. First operand has 182 places, 129 transitions, 1985 flow. Second operand 9 states and 199 transitions. [2023-11-29 00:39:30,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 145 transitions, 2322 flow [2023-11-29 00:39:30,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 145 transitions, 2224 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-29 00:39:30,266 INFO L231 Difference]: Finished difference. Result has 185 places, 68 transitions, 935 flow [2023-11-29 00:39:30,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=935, PETRI_PLACES=185, PETRI_TRANSITIONS=68} [2023-11-29 00:39:30,266 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2023-11-29 00:39:30,266 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 68 transitions, 935 flow [2023-11-29 00:39:30,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:30,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:30,266 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:30,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 00:39:30,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:30,467 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:30,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:30,467 INFO L85 PathProgramCache]: Analyzing trace with hash 631274231, now seen corresponding path program 28 times [2023-11-29 00:39:30,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:30,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759906104] [2023-11-29 00:39:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:30,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:30,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:30,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759906104] [2023-11-29 00:39:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759906104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993325884] [2023-11-29 00:39:30,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:39:30,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:30,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:30,608 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:30,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 00:39:30,681 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:39:30,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:30,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:39:30,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:30,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:31,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993325884] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:31,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:31,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-11-29 00:39:31,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365673405] [2023-11-29 00:39:31,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:31,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 00:39:31,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:31,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 00:39:31,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2023-11-29 00:39:31,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:31,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 68 transitions, 935 flow. Second operand has 27 states, 27 states have (on average 18.51851851851852) internal successors, (500), 27 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:31,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:31,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:31,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:31,509 INFO L124 PetriNetUnfolderBase]: 155/401 cut-off events. [2023-11-29 00:39:31,509 INFO L125 PetriNetUnfolderBase]: For 2121/2121 co-relation queries the response was YES. [2023-11-29 00:39:31,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 401 events. 155/401 cut-off events. For 2121/2121 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1822 event pairs, 39 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1859. Up to 154 conditions per place. [2023-11-29 00:39:31,512 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 52 selfloop transitions, 31 changer transitions 13/102 dead transitions. [2023-11-29 00:39:31,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 102 transitions, 1256 flow [2023-11-29 00:39:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:39:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 00:39:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 343 transitions. [2023-11-29 00:39:31,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793918918918919 [2023-11-29 00:39:31,513 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 343 transitions. [2023-11-29 00:39:31,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 343 transitions. [2023-11-29 00:39:31,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:31,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 343 transitions. [2023-11-29 00:39:31,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 21.4375) internal successors, (343), 16 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:31,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 37.0) internal successors, (629), 17 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:31,515 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 37.0) internal successors, (629), 17 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:31,515 INFO L175 Difference]: Start difference. First operand has 185 places, 68 transitions, 935 flow. Second operand 16 states and 343 transitions. [2023-11-29 00:39:31,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 102 transitions, 1256 flow [2023-11-29 00:39:31,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 102 transitions, 975 flow, removed 20 selfloop flow, removed 32 redundant places. [2023-11-29 00:39:31,522 INFO L231 Difference]: Finished difference. Result has 137 places, 67 transitions, 722 flow [2023-11-29 00:39:31,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=722, PETRI_PLACES=137, PETRI_TRANSITIONS=67} [2023-11-29 00:39:31,523 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 98 predicate places. [2023-11-29 00:39:31,523 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 67 transitions, 722 flow [2023-11-29 00:39:31,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 18.51851851851852) internal successors, (500), 27 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:31,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:31,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:31,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 00:39:31,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:31,724 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:31,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash -20344615, now seen corresponding path program 29 times [2023-11-29 00:39:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802036999] [2023-11-29 00:39:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:31,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:31,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802036999] [2023-11-29 00:39:31,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802036999] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:31,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548262089] [2023-11-29 00:39:31,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:39:31,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:31,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:31,856 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:31,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 00:39:31,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 00:39:31,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:31,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:39:31,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:39:32,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:39:32,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548262089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:39:32,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:39:32,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2023-11-29 00:39:32,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863095108] [2023-11-29 00:39:32,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:39:32,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:39:32,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:39:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:39:32,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:32,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 67 transitions, 722 flow. Second operand has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:32,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:32,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:32,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:32,121 INFO L124 PetriNetUnfolderBase]: 138/348 cut-off events. [2023-11-29 00:39:32,122 INFO L125 PetriNetUnfolderBase]: For 1133/1139 co-relation queries the response was YES. [2023-11-29 00:39:32,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 348 events. 138/348 cut-off events. For 1133/1139 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1479 event pairs, 12 based on Foata normal form. 6/354 useless extension candidates. Maximal degree in co-relation 1479. Up to 73 conditions per place. [2023-11-29 00:39:32,124 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 35 selfloop transitions, 19 changer transitions 21/81 dead transitions. [2023-11-29 00:39:32,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 81 transitions, 903 flow [2023-11-29 00:39:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:39:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:39:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2023-11-29 00:39:32,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5825825825825826 [2023-11-29 00:39:32,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 194 transitions. [2023-11-29 00:39:32,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 194 transitions. [2023-11-29 00:39:32,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:32,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 194 transitions. [2023-11-29 00:39:32,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.555555555555557) internal successors, (194), 9 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:32,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:32,126 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:32,126 INFO L175 Difference]: Start difference. First operand has 137 places, 67 transitions, 722 flow. Second operand 9 states and 194 transitions. [2023-11-29 00:39:32,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 81 transitions, 903 flow [2023-11-29 00:39:32,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 81 transitions, 831 flow, removed 2 selfloop flow, removed 15 redundant places. [2023-11-29 00:39:32,131 INFO L231 Difference]: Finished difference. Result has 129 places, 52 transitions, 524 flow [2023-11-29 00:39:32,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=524, PETRI_PLACES=129, PETRI_TRANSITIONS=52} [2023-11-29 00:39:32,131 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2023-11-29 00:39:32,131 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 52 transitions, 524 flow [2023-11-29 00:39:32,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:32,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:32,132 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:32,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 00:39:32,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:32,332 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:32,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash 417496757, now seen corresponding path program 30 times [2023-11-29 00:39:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:32,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424902768] [2023-11-29 00:39:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:32,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:32,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424902768] [2023-11-29 00:39:32,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424902768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:32,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703207771] [2023-11-29 00:39:32,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:39:32,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:32,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:32,461 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:32,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 00:39:32,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 00:39:32,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:32,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:39:32,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:32,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:32,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703207771] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:32,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:32,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 28 [2023-11-29 00:39:32,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399231064] [2023-11-29 00:39:32,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:32,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 00:39:32,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:32,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 00:39:32,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:39:32,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:32,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 52 transitions, 524 flow. Second operand has 29 states, 29 states have (on average 18.448275862068964) internal successors, (535), 29 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:32,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:32,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:32,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:33,642 INFO L124 PetriNetUnfolderBase]: 114/279 cut-off events. [2023-11-29 00:39:33,642 INFO L125 PetriNetUnfolderBase]: For 1029/1034 co-relation queries the response was YES. [2023-11-29 00:39:33,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 279 events. 114/279 cut-off events. For 1029/1034 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1095 event pairs, 6 based on Foata normal form. 8/287 useless extension candidates. Maximal degree in co-relation 1268. Up to 61 conditions per place. [2023-11-29 00:39:33,644 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 30 selfloop transitions, 14 changer transitions 58/108 dead transitions. [2023-11-29 00:39:33,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 108 transitions, 1007 flow [2023-11-29 00:39:33,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 00:39:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 00:39:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 566 transitions. [2023-11-29 00:39:33,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5463320463320464 [2023-11-29 00:39:33,646 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 566 transitions. [2023-11-29 00:39:33,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 566 transitions. [2023-11-29 00:39:33,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:33,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 566 transitions. [2023-11-29 00:39:33,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 20.214285714285715) internal successors, (566), 28 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:33,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 37.0) internal successors, (1073), 29 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:33,648 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 37.0) internal successors, (1073), 29 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:33,648 INFO L175 Difference]: Start difference. First operand has 129 places, 52 transitions, 524 flow. Second operand 28 states and 566 transitions. [2023-11-29 00:39:33,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 108 transitions, 1007 flow [2023-11-29 00:39:33,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 108 transitions, 827 flow, removed 16 selfloop flow, removed 22 redundant places. [2023-11-29 00:39:33,655 INFO L231 Difference]: Finished difference. Result has 122 places, 35 transitions, 249 flow [2023-11-29 00:39:33,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=249, PETRI_PLACES=122, PETRI_TRANSITIONS=35} [2023-11-29 00:39:33,655 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2023-11-29 00:39:33,656 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 35 transitions, 249 flow [2023-11-29 00:39:33,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 18.448275862068964) internal successors, (535), 29 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:33,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:33,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:33,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 00:39:33,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:33,856 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:33,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:33,857 INFO L85 PathProgramCache]: Analyzing trace with hash 668798667, now seen corresponding path program 31 times [2023-11-29 00:39:33,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:33,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253516507] [2023-11-29 00:39:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:33,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:33,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253516507] [2023-11-29 00:39:33,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253516507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667089949] [2023-11-29 00:39:33,980 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:39:33,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:33,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:33,981 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:33,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 00:39:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:34,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:39:34,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:34,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667089949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:34,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2023-11-29 00:39:34,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630462883] [2023-11-29 00:39:34,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:34,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:39:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:39:34,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:39:34,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:34,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 35 transitions, 249 flow. Second operand has 28 states, 28 states have (on average 18.392857142857142) internal successors, (515), 28 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:34,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:34,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:34,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:34,800 INFO L124 PetriNetUnfolderBase]: 55/146 cut-off events. [2023-11-29 00:39:34,801 INFO L125 PetriNetUnfolderBase]: For 305/309 co-relation queries the response was YES. [2023-11-29 00:39:34,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 146 events. 55/146 cut-off events. For 305/309 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 446 event pairs, 0 based on Foata normal form. 3/149 useless extension candidates. Maximal degree in co-relation 534. Up to 45 conditions per place. [2023-11-29 00:39:34,802 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 26 selfloop transitions, 13 changer transitions 13/58 dead transitions. [2023-11-29 00:39:34,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 58 transitions, 404 flow [2023-11-29 00:39:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:39:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:39:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 306 transitions. [2023-11-29 00:39:34,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513513513513514 [2023-11-29 00:39:34,803 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 306 transitions. [2023-11-29 00:39:34,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 306 transitions. [2023-11-29 00:39:34,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:34,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 306 transitions. [2023-11-29 00:39:34,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:34,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 37.0) internal successors, (592), 16 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:34,804 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 37.0) internal successors, (592), 16 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:34,804 INFO L175 Difference]: Start difference. First operand has 122 places, 35 transitions, 249 flow. Second operand 15 states and 306 transitions. [2023-11-29 00:39:34,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 58 transitions, 404 flow [2023-11-29 00:39:34,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 58 transitions, 355 flow, removed 5 selfloop flow, removed 20 redundant places. [2023-11-29 00:39:34,806 INFO L231 Difference]: Finished difference. Result has 90 places, 31 transitions, 186 flow [2023-11-29 00:39:34,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=186, PETRI_PLACES=90, PETRI_TRANSITIONS=31} [2023-11-29 00:39:34,806 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2023-11-29 00:39:34,806 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 31 transitions, 186 flow [2023-11-29 00:39:34,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 18.392857142857142) internal successors, (515), 28 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:34,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:34,806 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:34,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 00:39:35,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-11-29 00:39:35,007 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:35,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:35,007 INFO L85 PathProgramCache]: Analyzing trace with hash 258499159, now seen corresponding path program 32 times [2023-11-29 00:39:35,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:35,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551606438] [2023-11-29 00:39:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:35,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551606438] [2023-11-29 00:39:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551606438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901206125] [2023-11-29 00:39:35,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:39:35,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:35,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:35,132 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:35,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 00:39:35,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:39:35,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:35,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:39:35,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:35,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:35,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901206125] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:35,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:35,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2023-11-29 00:39:35,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003105159] [2023-11-29 00:39:35,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:35,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:39:35,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:39:35,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:39:35,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:35,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 31 transitions, 186 flow. Second operand has 28 states, 28 states have (on average 18.464285714285715) internal successors, (517), 28 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:35,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:35,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:35,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:35,869 INFO L124 PetriNetUnfolderBase]: 41/108 cut-off events. [2023-11-29 00:39:35,869 INFO L125 PetriNetUnfolderBase]: For 201/203 co-relation queries the response was YES. [2023-11-29 00:39:35,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 108 events. 41/108 cut-off events. For 201/203 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 264 event pairs, 0 based on Foata normal form. 2/110 useless extension candidates. Maximal degree in co-relation 390. Up to 23 conditions per place. [2023-11-29 00:39:35,870 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 23 selfloop transitions, 10 changer transitions 11/50 dead transitions. [2023-11-29 00:39:35,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 50 transitions, 316 flow [2023-11-29 00:39:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:39:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:39:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 282 transitions. [2023-11-29 00:39:35,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444015444015444 [2023-11-29 00:39:35,870 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 282 transitions. [2023-11-29 00:39:35,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 282 transitions. [2023-11-29 00:39:35,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:35,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 282 transitions. [2023-11-29 00:39:35,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:35,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:35,872 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 37.0) internal successors, (555), 15 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:35,872 INFO L175 Difference]: Start difference. First operand has 90 places, 31 transitions, 186 flow. Second operand 14 states and 282 transitions. [2023-11-29 00:39:35,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 50 transitions, 316 flow [2023-11-29 00:39:35,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 50 transitions, 237 flow, removed 4 selfloop flow, removed 24 redundant places. [2023-11-29 00:39:35,873 INFO L231 Difference]: Finished difference. Result has 75 places, 28 transitions, 114 flow [2023-11-29 00:39:35,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=114, PETRI_PLACES=75, PETRI_TRANSITIONS=28} [2023-11-29 00:39:35,873 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2023-11-29 00:39:35,873 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 28 transitions, 114 flow [2023-11-29 00:39:35,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 18.464285714285715) internal successors, (517), 28 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:35,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:39:35,874 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:35,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 00:39:36,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:36,074 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 00:39:36,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:36,074 INFO L85 PathProgramCache]: Analyzing trace with hash -432777291, now seen corresponding path program 33 times [2023-11-29 00:39:36,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:36,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407475846] [2023-11-29 00:39:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:39:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:36,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:36,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407475846] [2023-11-29 00:39:36,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407475846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:39:36,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159273678] [2023-11-29 00:39:36,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:39:36,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:36,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:36,192 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:36,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 00:39:36,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:39:36,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:36,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:39:36,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:36,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:39:36,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159273678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:36,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:39:36,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2023-11-29 00:39:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098166837] [2023-11-29 00:39:36,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:36,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:39:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:39:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:39:36,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2023-11-29 00:39:36,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 28 transitions, 114 flow. Second operand has 28 states, 28 states have (on average 18.392857142857142) internal successors, (515), 28 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:36,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:39:36,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2023-11-29 00:39:36,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:39:36,871 INFO L124 PetriNetUnfolderBase]: 24/66 cut-off events. [2023-11-29 00:39:36,871 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-29 00:39:36,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 66 events. 24/66 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 2/68 useless extension candidates. Maximal degree in co-relation 201. Up to 21 conditions per place. [2023-11-29 00:39:36,872 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-11-29 00:39:36,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 38 transitions, 199 flow [2023-11-29 00:39:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:39:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:39:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 255 transitions. [2023-11-29 00:39:36,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301455301455301 [2023-11-29 00:39:36,872 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 255 transitions. [2023-11-29 00:39:36,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 255 transitions. [2023-11-29 00:39:36,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:39:36,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 255 transitions. [2023-11-29 00:39:36,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 19.615384615384617) internal successors, (255), 13 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:36,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:36,874 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 37.0) internal successors, (518), 14 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:36,874 INFO L175 Difference]: Start difference. First operand has 75 places, 28 transitions, 114 flow. Second operand 13 states and 255 transitions. [2023-11-29 00:39:36,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 38 transitions, 199 flow [2023-11-29 00:39:36,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 38 transitions, 178 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-29 00:39:36,874 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2023-11-29 00:39:36,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2023-11-29 00:39:36,875 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2023-11-29 00:39:36,875 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2023-11-29 00:39:36,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 18.392857142857142) internal successors, (515), 28 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:39:36,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-29 00:39:36,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-29 00:39:36,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-29 00:39:36,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-29 00:39:36,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-29 00:39:36,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-29 00:39:36,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-29 00:39:36,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-29 00:39:36,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-29 00:39:36,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-29 00:39:36,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-29 00:39:36,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-29 00:39:36,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 00:39:37,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:37,078 INFO L445 BasicCegarLoop]: Path program histogram: [33, 20, 5, 5, 1, 1, 1, 1] [2023-11-29 00:39:37,081 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 00:39:37,081 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:39:37,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:39:37 BasicIcfg [2023-11-29 00:39:37,085 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:39:37,085 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:39:37,085 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:39:37,085 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:39:37,086 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:38:42" (3/4) ... [2023-11-29 00:39:37,087 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:39:37,090 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 00:39:37,090 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 00:39:37,095 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 52 nodes and edges [2023-11-29 00:39:37,095 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-29 00:39:37,096 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 00:39:37,096 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 00:39:37,163 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:39:37,163 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:39:37,163 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:39:37,164 INFO L158 Benchmark]: Toolchain (without parser) took 55069.67ms. Allocated memory was 161.5MB in the beginning and 425.7MB in the end (delta: 264.2MB). Free memory was 124.6MB in the beginning and 303.6MB in the end (delta: -179.0MB). Peak memory consumption was 87.6MB. Max. memory is 16.1GB. [2023-11-29 00:39:37,164 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 53.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:39:37,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.21ms. Allocated memory is still 161.5MB. Free memory was 124.6MB in the beginning and 113.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:39:37,165 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.97ms. Allocated memory is still 161.5MB. Free memory was 113.5MB in the beginning and 112.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:39:37,165 INFO L158 Benchmark]: Boogie Preprocessor took 44.50ms. Allocated memory is still 161.5MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:39:37,166 INFO L158 Benchmark]: RCFGBuilder took 439.55ms. Allocated memory is still 161.5MB. Free memory was 109.9MB in the beginning and 86.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 00:39:37,166 INFO L158 Benchmark]: TraceAbstraction took 54217.46ms. Allocated memory was 161.5MB in the beginning and 425.7MB in the end (delta: 264.2MB). Free memory was 86.0MB in the beginning and 307.7MB in the end (delta: -221.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2023-11-29 00:39:37,166 INFO L158 Benchmark]: Witness Printer took 78.14ms. Allocated memory is still 425.7MB. Free memory was 307.7MB in the beginning and 303.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:39:37,168 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 53.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.21ms. Allocated memory is still 161.5MB. Free memory was 124.6MB in the beginning and 113.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.97ms. Allocated memory is still 161.5MB. Free memory was 113.5MB in the beginning and 112.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.50ms. Allocated memory is still 161.5MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 439.55ms. Allocated memory is still 161.5MB. Free memory was 109.9MB in the beginning and 86.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 54217.46ms. Allocated memory was 161.5MB in the beginning and 425.7MB in the end (delta: 264.2MB). Free memory was 86.0MB in the beginning and 307.7MB in the end (delta: -221.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * Witness Printer took 78.14ms. Allocated memory is still 425.7MB. Free memory was 307.7MB in the beginning and 303.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: 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 5 procedures, 48 locations, 12 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: 54.1s, OverallIterations: 67, TraceHistogramMax: 2, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.0s, AutomataDifference: 27.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3277 SdHoareTripleChecker+Valid, 11.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3161 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 9.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 653 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23593 IncrementalHoareTripleChecker+Invalid, 24246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 653 mSolverCounterUnsat, 27 mSDtfsCounter, 23593 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2515 GetRequests, 1253 SyntacticMatches, 3 SemanticMatches, 1259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8788 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3313occurred in iteration=38, InterpolantAutomatonStates: 817, 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: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 2323 NumberOfCodeBlocks, 2322 NumberOfCodeBlocksAsserted, 133 NumberOfCheckSat, 2923 ConstructedInterpolants, 0 QuantifiedInterpolants, 16080 SizeOfPredicates, 119 NumberOfNonLiveVariables, 4972 ConjunctsInSsa, 453 ConjunctsInUnsatCore, 131 InterpolantComputations, 38 PerfectInterpolantSequences, 55/290 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 00:39:37,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b199f75a-cc55-4eea-a904-16f74acc0380/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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