./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe012_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe012_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0d36e1a5ffb179c1d1cdd78990789e54ced4be7c39ab7d274d26f9b2f26b935 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:47,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:47,610 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:45:47,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:47,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:47,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:47,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:47,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:47,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:47,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:47,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:47,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:47,668 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:47,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:47,671 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:47,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:47,671 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:47,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:47,672 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:45:47,673 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:45:47,673 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:45:47,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:47,674 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:45:47,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:47,675 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:47,675 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:47,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:47,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:47,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:47,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:47,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:47,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:47,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:47,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:47,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:47,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:47,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:47,680 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:47,681 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_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0d36e1a5ffb179c1d1cdd78990789e54ced4be7c39ab7d274d26f9b2f26b935 [2023-11-19 07:45:48,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:48,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:48,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:48,065 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:48,066 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:48,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe012_power.oepc.i [2023-11-19 07:45:51,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:51,623 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:51,624 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/sv-benchmarks/c/pthread-wmm/safe012_power.oepc.i [2023-11-19 07:45:51,649 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/data/d678a5b37/12151e5e16de4060b28c01de0b77834b/FLAG91b6ef0f1 [2023-11-19 07:45:51,667 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/data/d678a5b37/12151e5e16de4060b28c01de0b77834b [2023-11-19 07:45:51,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:51,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:51,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:51,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:51,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:51,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:51" (1/1) ... [2023-11-19 07:45:51,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8926c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:51, skipping insertion in model container [2023-11-19 07:45:51,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:51" (1/1) ... [2023-11-19 07:45:51,756 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:52,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:52,323 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:52,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:52,478 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:52,479 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:52,487 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:52,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52 WrapperNode [2023-11-19 07:45:52,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:52,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:52,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:52,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:52,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,559 INFO L138 Inliner]: procedures = 176, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2023-11-19 07:45:52,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:52,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:52,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:52,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:52,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,617 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:52,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:52,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:52,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:52,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (1/1) ... [2023-11-19 07:45:52,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:52,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:52,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:52,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882261e5-3672-4011-ac31-0fa287d3d0a1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:52,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:45:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:45:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:45:52,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:45:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:45:52,745 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:45:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:45:52,745 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:45:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:45:52,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:52,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:52,750 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:45:53,031 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:53,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:53,822 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:54,263 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:54,264 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:45:54,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:54 BoogieIcfgContainer [2023-11-19 07:45:54,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:54,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:54,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:54,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:54,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:51" (1/3) ... [2023-11-19 07:45:54,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfd59a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:54, skipping insertion in model container [2023-11-19 07:45:54,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:52" (2/3) ... [2023-11-19 07:45:54,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfd59a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:54, skipping insertion in model container [2023-11-19 07:45:54,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:54" (3/3) ... [2023-11-19 07:45:54,279 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_power.oepc.i [2023-11-19 07:45:54,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:54,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-19 07:45:54,304 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:45:54,461 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:45:54,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 195 transitions, 402 flow [2023-11-19 07:45:54,725 INFO L124 PetriNetUnfolderBase]: 25/192 cut-off events. [2023-11-19 07:45:54,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:54,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 192 events. 25/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 275 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2023-11-19 07:45:54,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 195 transitions, 402 flow [2023-11-19 07:45:54,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 192 transitions, 393 flow [2023-11-19 07:45:54,755 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:54,779 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 192 transitions, 393 flow [2023-11-19 07:45:54,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 192 transitions, 393 flow [2023-11-19 07:45:54,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 192 transitions, 393 flow [2023-11-19 07:45:54,896 INFO L124 PetriNetUnfolderBase]: 25/192 cut-off events. [2023-11-19 07:45:54,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:54,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 192 events. 25/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 274 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2023-11-19 07:45:54,908 INFO L119 LiptonReduction]: Number of co-enabled transitions 9472 [2023-11-19 07:46:09,491 INFO L134 LiptonReduction]: Checked pairs total: 25482 [2023-11-19 07:46:09,491 INFO L136 LiptonReduction]: Total number of compositions: 208 [2023-11-19 07:46:09,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:09,517 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;@6fa8a9ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:09,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-19 07:46:09,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:09,521 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:46:09,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:09,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:09,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:46:09,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:09,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1071, now seen corresponding path program 1 times [2023-11-19 07:46:09,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219204945] [2023-11-19 07:46:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:09,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:09,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219204945] [2023-11-19 07:46:09,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219204945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:09,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:09,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:46:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334892982] [2023-11-19 07:46:09,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:09,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:46:09,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:46:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:46:09,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 403 [2023-11-19 07:46:09,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 135 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:09,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:09,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 403 [2023-11-19 07:46:09,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:11,900 INFO L124 PetriNetUnfolderBase]: 5794/8342 cut-off events. [2023-11-19 07:46:11,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:11,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16719 conditions, 8342 events. 5794/8342 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 48414 event pairs, 5794 based on Foata normal form. 0/4652 useless extension candidates. Maximal degree in co-relation 16708. Up to 8331 conditions per place. [2023-11-19 07:46:11,988 INFO L140 encePairwiseOnDemand]: 381/403 looper letters, 38 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2023-11-19 07:46:11,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 165 flow [2023-11-19 07:46:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:46:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:46:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 326 transitions. [2023-11-19 07:46:12,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4044665012406948 [2023-11-19 07:46:12,007 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 326 transitions. [2023-11-19 07:46:12,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 326 transitions. [2023-11-19 07:46:12,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:12,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 326 transitions. [2023-11-19 07:46:12,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.0) internal successors, (326), 2 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,029 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,031 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 135 flow. Second operand 2 states and 326 transitions. [2023-11-19 07:46:12,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 165 flow [2023-11-19 07:46:12,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:46:12,042 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 86 flow [2023-11-19 07:46:12,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-11-19 07:46:12,050 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -23 predicate places. [2023-11-19 07:46:12,051 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 86 flow [2023-11-19 07:46:12,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:12,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:46:12,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:46:12,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:12,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:12,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1053884, now seen corresponding path program 1 times [2023-11-19 07:46:12,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:12,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851325166] [2023-11-19 07:46:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:12,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:12,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851325166] [2023-11-19 07:46:12,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851325166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:12,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:12,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:12,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214386975] [2023-11-19 07:46:12,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:12,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:12,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:12,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 403 [2023-11-19 07:46:12,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:12,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 403 [2023-11-19 07:46:12,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:13,965 INFO L124 PetriNetUnfolderBase]: 4193/6292 cut-off events. [2023-11-19 07:46:13,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:13,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12539 conditions, 6292 events. 4193/6292 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 37668 event pairs, 2712 based on Foata normal form. 0/4151 useless extension candidates. Maximal degree in co-relation 12536. Up to 3970 conditions per place. [2023-11-19 07:46:14,026 INFO L140 encePairwiseOnDemand]: 389/403 looper letters, 43 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2023-11-19 07:46:14,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 214 flow [2023-11-19 07:46:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-11-19 07:46:14,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36724565756823824 [2023-11-19 07:46:14,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-11-19 07:46:14,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-11-19 07:46:14,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:14,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-11-19 07:46:14,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:14,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:14,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:14,041 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 86 flow. Second operand 3 states and 444 transitions. [2023-11-19 07:46:14,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 214 flow [2023-11-19 07:46:14,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:14,043 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 146 flow [2023-11-19 07:46:14,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-11-19 07:46:14,046 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -21 predicate places. [2023-11-19 07:46:14,047 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 146 flow [2023-11-19 07:46:14,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:14,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:14,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:46:14,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:46:14,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:14,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1053885, now seen corresponding path program 1 times [2023-11-19 07:46:14,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:14,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113676049] [2023-11-19 07:46:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:14,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:14,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:14,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113676049] [2023-11-19 07:46:14,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113676049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:14,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:14,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:14,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168379788] [2023-11-19 07:46:14,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:14,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:14,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:14,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 403 [2023-11-19 07:46:14,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:14,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:14,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 403 [2023-11-19 07:46:14,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:15,120 INFO L124 PetriNetUnfolderBase]: 1885/2953 cut-off events. [2023-11-19 07:46:15,121 INFO L125 PetriNetUnfolderBase]: For 596/596 co-relation queries the response was YES. [2023-11-19 07:46:15,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7620 conditions, 2953 events. 1885/2953 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 16742 event pairs, 1579 based on Foata normal form. 408/3012 useless extension candidates. Maximal degree in co-relation 7615. Up to 2885 conditions per place. [2023-11-19 07:46:15,146 INFO L140 encePairwiseOnDemand]: 396/403 looper letters, 35 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-19 07:46:15,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 206 flow [2023-11-19 07:46:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-11-19 07:46:15,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573200992555831 [2023-11-19 07:46:15,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-11-19 07:46:15,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-11-19 07:46:15,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:15,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-11-19 07:46:15,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:15,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:15,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:15,160 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 146 flow. Second operand 3 states and 432 transitions. [2023-11-19 07:46:15,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 206 flow [2023-11-19 07:46:15,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:15,172 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 120 flow [2023-11-19 07:46:15,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-19 07:46:15,173 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -27 predicate places. [2023-11-19 07:46:15,174 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 120 flow [2023-11-19 07:46:15,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:15,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:15,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:15,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:46:15,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:15,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1845337425, now seen corresponding path program 1 times [2023-11-19 07:46:15,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991903298] [2023-11-19 07:46:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:15,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:15,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991903298] [2023-11-19 07:46:15,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991903298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:15,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:15,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:15,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195925147] [2023-11-19 07:46:15,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:15,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:15,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:15,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:15,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 403 [2023-11-19 07:46:15,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 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) [2023-11-19 07:46:15,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:15,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 403 [2023-11-19 07:46:15,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:16,124 INFO L124 PetriNetUnfolderBase]: 1811/2966 cut-off events. [2023-11-19 07:46:16,124 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2023-11-19 07:46:16,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7052 conditions, 2966 events. 1811/2966 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 18279 event pairs, 641 based on Foata normal form. 0/2458 useless extension candidates. Maximal degree in co-relation 7047. Up to 1891 conditions per place. [2023-11-19 07:46:16,153 INFO L140 encePairwiseOnDemand]: 399/403 looper letters, 61 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-11-19 07:46:16,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 336 flow [2023-11-19 07:46:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-11-19 07:46:16,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3730355665839537 [2023-11-19 07:46:16,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-11-19 07:46:16,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-11-19 07:46:16,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:16,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-11-19 07:46:16,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:16,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:16,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:16,168 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 120 flow. Second operand 3 states and 451 transitions. [2023-11-19 07:46:16,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 66 transitions, 336 flow [2023-11-19 07:46:16,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:16,172 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 132 flow [2023-11-19 07:46:16,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-19 07:46:16,174 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -25 predicate places. [2023-11-19 07:46:16,174 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 132 flow [2023-11-19 07:46:16,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 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) [2023-11-19 07:46:16,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:16,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:16,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:46:16,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:16,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1845337021, now seen corresponding path program 1 times [2023-11-19 07:46:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039831209] [2023-11-19 07:46:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:16,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:16,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:16,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039831209] [2023-11-19 07:46:16,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039831209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:16,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:16,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:16,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884310353] [2023-11-19 07:46:16,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:16,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:16,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:16,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:16,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 403 [2023-11-19 07:46:16,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:16,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:16,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 403 [2023-11-19 07:46:16,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:17,070 INFO L124 PetriNetUnfolderBase]: 1790/2807 cut-off events. [2023-11-19 07:46:17,070 INFO L125 PetriNetUnfolderBase]: For 538/538 co-relation queries the response was YES. [2023-11-19 07:46:17,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7354 conditions, 2807 events. 1790/2807 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 16167 event pairs, 363 based on Foata normal form. 0/2431 useless extension candidates. Maximal degree in co-relation 7348. Up to 2412 conditions per place. [2023-11-19 07:46:17,090 INFO L140 encePairwiseOnDemand]: 400/403 looper letters, 52 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-19 07:46:17,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 306 flow [2023-11-19 07:46:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-11-19 07:46:17,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36228287841191065 [2023-11-19 07:46:17,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-11-19 07:46:17,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-11-19 07:46:17,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:17,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-11-19 07:46:17,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,102 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 132 flow. Second operand 3 states and 438 transitions. [2023-11-19 07:46:17,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 306 flow [2023-11-19 07:46:17,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:17,105 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 134 flow [2023-11-19 07:46:17,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-19 07:46:17,108 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -24 predicate places. [2023-11-19 07:46:17,109 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 134 flow [2023-11-19 07:46:17,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:17,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:17,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:46:17,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:17,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:17,111 INFO L85 PathProgramCache]: Analyzing trace with hash -448345040, now seen corresponding path program 1 times [2023-11-19 07:46:17,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:17,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854067852] [2023-11-19 07:46:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:17,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:17,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:17,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854067852] [2023-11-19 07:46:17,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854067852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:17,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:17,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:17,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754460516] [2023-11-19 07:46:17,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:17,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:17,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:17,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:17,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:17,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 403 [2023-11-19 07:46:17,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:17,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:17,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 403 [2023-11-19 07:46:17,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:18,284 INFO L124 PetriNetUnfolderBase]: 1731/2844 cut-off events. [2023-11-19 07:46:18,284 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2023-11-19 07:46:18,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7309 conditions, 2844 events. 1731/2844 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 17355 event pairs, 525 based on Foata normal form. 0/2441 useless extension candidates. Maximal degree in co-relation 7302. Up to 1117 conditions per place. [2023-11-19 07:46:18,304 INFO L140 encePairwiseOnDemand]: 394/403 looper letters, 59 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-11-19 07:46:18,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 70 transitions, 372 flow [2023-11-19 07:46:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:46:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 683 transitions. [2023-11-19 07:46:18,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3389578163771712 [2023-11-19 07:46:18,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 683 transitions. [2023-11-19 07:46:18,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 683 transitions. [2023-11-19 07:46:18,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:18,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 683 transitions. [2023-11-19 07:46:18,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,318 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 403.0) internal successors, (2418), 6 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,318 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 134 flow. Second operand 5 states and 683 transitions. [2023-11-19 07:46:18,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 70 transitions, 372 flow [2023-11-19 07:46:18,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:18,321 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 194 flow [2023-11-19 07:46:18,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-11-19 07:46:18,322 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -21 predicate places. [2023-11-19 07:46:18,323 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 194 flow [2023-11-19 07:46:18,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:18,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:18,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:46:18,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:18,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1370874783, now seen corresponding path program 1 times [2023-11-19 07:46:18,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:18,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392520993] [2023-11-19 07:46:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:18,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:18,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:18,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392520993] [2023-11-19 07:46:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392520993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:18,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:18,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:18,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259761382] [2023-11-19 07:46:18,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:18,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:18,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:18,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 403 [2023-11-19 07:46:18,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:18,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:18,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 403 [2023-11-19 07:46:18,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:19,251 INFO L124 PetriNetUnfolderBase]: 1672/2696 cut-off events. [2023-11-19 07:46:19,251 INFO L125 PetriNetUnfolderBase]: For 1784/1784 co-relation queries the response was YES. [2023-11-19 07:46:19,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 2696 events. 1672/2696 cut-off events. For 1784/1784 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 15419 event pairs, 729 based on Foata normal form. 30/2515 useless extension candidates. Maximal degree in co-relation 7680. Up to 1690 conditions per place. [2023-11-19 07:46:19,272 INFO L140 encePairwiseOnDemand]: 400/403 looper letters, 59 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-19 07:46:19,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 381 flow [2023-11-19 07:46:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 576 transitions. [2023-11-19 07:46:19,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573200992555831 [2023-11-19 07:46:19,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 576 transitions. [2023-11-19 07:46:19,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 576 transitions. [2023-11-19 07:46:19,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:19,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 576 transitions. [2023-11-19 07:46:19,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,283 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 194 flow. Second operand 4 states and 576 transitions. [2023-11-19 07:46:19,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 381 flow [2023-11-19 07:46:19,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 374 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:46:19,294 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 189 flow [2023-11-19 07:46:19,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-19 07:46:19,295 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -22 predicate places. [2023-11-19 07:46:19,295 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 189 flow [2023-11-19 07:46:19,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:19,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:19,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:46:19,296 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:19,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1370931699, now seen corresponding path program 1 times [2023-11-19 07:46:19,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:19,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238745150] [2023-11-19 07:46:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:19,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:19,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:19,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238745150] [2023-11-19 07:46:19,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238745150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:19,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:19,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:19,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101917238] [2023-11-19 07:46:19,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:19,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:19,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:19,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 403 [2023-11-19 07:46:19,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:19,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 403 [2023-11-19 07:46:19,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:20,249 INFO L124 PetriNetUnfolderBase]: 1643/2647 cut-off events. [2023-11-19 07:46:20,249 INFO L125 PetriNetUnfolderBase]: For 1690/1690 co-relation queries the response was YES. [2023-11-19 07:46:20,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7544 conditions, 2647 events. 1643/2647 cut-off events. For 1690/1690 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 15138 event pairs, 728 based on Foata normal form. 12/2448 useless extension candidates. Maximal degree in co-relation 7536. Up to 1679 conditions per place. [2023-11-19 07:46:20,271 INFO L140 encePairwiseOnDemand]: 400/403 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-11-19 07:46:20,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 374 flow [2023-11-19 07:46:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-11-19 07:46:20,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37220843672456577 [2023-11-19 07:46:20,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-11-19 07:46:20,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-11-19 07:46:20,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:20,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-11-19 07:46:20,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 403.0) internal successors, (1612), 4 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,282 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 189 flow. Second operand 3 states and 450 transitions. [2023-11-19 07:46:20,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 374 flow [2023-11-19 07:46:20,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:20,296 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 196 flow [2023-11-19 07:46:20,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-11-19 07:46:20,297 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -21 predicate places. [2023-11-19 07:46:20,297 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 196 flow [2023-11-19 07:46:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:20,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:20,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:46:20,298 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:20,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 450788714, now seen corresponding path program 1 times [2023-11-19 07:46:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:20,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174819502] [2023-11-19 07:46:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:20,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:20,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174819502] [2023-11-19 07:46:20,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174819502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:20,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:20,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981275731] [2023-11-19 07:46:20,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:20,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:20,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:20,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:20,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 403 [2023-11-19 07:46:20,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:20,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 403 [2023-11-19 07:46:20,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:21,652 INFO L124 PetriNetUnfolderBase]: 3050/4778 cut-off events. [2023-11-19 07:46:21,652 INFO L125 PetriNetUnfolderBase]: For 4093/4093 co-relation queries the response was YES. [2023-11-19 07:46:21,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14677 conditions, 4778 events. 3050/4778 cut-off events. For 4093/4093 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 29485 event pairs, 862 based on Foata normal form. 32/4401 useless extension candidates. Maximal degree in co-relation 14668. Up to 1748 conditions per place. [2023-11-19 07:46:21,689 INFO L140 encePairwiseOnDemand]: 399/403 looper letters, 99 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-11-19 07:46:21,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 103 transitions, 713 flow [2023-11-19 07:46:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 584 transitions. [2023-11-19 07:46:21,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36228287841191065 [2023-11-19 07:46:21,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 584 transitions. [2023-11-19 07:46:21,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 584 transitions. [2023-11-19 07:46:21,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:21,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 584 transitions. [2023-11-19 07:46:21,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:21,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:21,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:21,702 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 196 flow. Second operand 4 states and 584 transitions. [2023-11-19 07:46:21,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 103 transitions, 713 flow [2023-11-19 07:46:21,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 103 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:21,717 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 209 flow [2023-11-19 07:46:21,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-11-19 07:46:21,718 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -18 predicate places. [2023-11-19 07:46:21,718 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 209 flow [2023-11-19 07:46:21,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:21,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:21,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:21,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:46:21,720 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:21,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash 452623856, now seen corresponding path program 1 times [2023-11-19 07:46:21,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:21,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830667636] [2023-11-19 07:46:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:21,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:21,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:21,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830667636] [2023-11-19 07:46:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830667636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:21,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:21,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:21,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448951328] [2023-11-19 07:46:21,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:21,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:22,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 403 [2023-11-19 07:46:22,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:22,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:22,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 403 [2023-11-19 07:46:22,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:22,869 INFO L124 PetriNetUnfolderBase]: 2212/3543 cut-off events. [2023-11-19 07:46:22,869 INFO L125 PetriNetUnfolderBase]: For 1777/1785 co-relation queries the response was YES. [2023-11-19 07:46:22,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10882 conditions, 3543 events. 2212/3543 cut-off events. For 1777/1785 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 21095 event pairs, 940 based on Foata normal form. 61/3282 useless extension candidates. Maximal degree in co-relation 10871. Up to 1439 conditions per place. [2023-11-19 07:46:22,895 INFO L140 encePairwiseOnDemand]: 392/403 looper letters, 48 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2023-11-19 07:46:22,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 421 flow [2023-11-19 07:46:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-11-19 07:46:22,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2023-11-19 07:46:22,899 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-11-19 07:46:22,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-11-19 07:46:22,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:22,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-11-19 07:46:22,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:22,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:22,906 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 403.0) internal successors, (2015), 5 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:22,906 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 209 flow. Second operand 4 states and 546 transitions. [2023-11-19 07:46:22,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 421 flow [2023-11-19 07:46:22,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:22,918 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 302 flow [2023-11-19 07:46:22,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-19 07:46:22,919 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2023-11-19 07:46:22,919 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 302 flow [2023-11-19 07:46:22,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:22,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:22,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:22,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:46:22,920 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:22,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:22,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1146437067, now seen corresponding path program 1 times [2023-11-19 07:46:22,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:22,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836831794] [2023-11-19 07:46:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:22,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:23,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:23,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836831794] [2023-11-19 07:46:23,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836831794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:23,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:23,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509090694] [2023-11-19 07:46:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:23,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:46:23,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:23,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:46:23,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:23,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 403 [2023-11-19 07:46:23,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:23,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:23,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 403 [2023-11-19 07:46:23,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:24,190 INFO L124 PetriNetUnfolderBase]: 1835/3012 cut-off events. [2023-11-19 07:46:24,190 INFO L125 PetriNetUnfolderBase]: For 2574/2582 co-relation queries the response was YES. [2023-11-19 07:46:24,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10230 conditions, 3012 events. 1835/3012 cut-off events. For 2574/2582 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 18079 event pairs, 512 based on Foata normal form. 61/2900 useless extension candidates. Maximal degree in co-relation 10218. Up to 1244 conditions per place. [2023-11-19 07:46:24,219 INFO L140 encePairwiseOnDemand]: 391/403 looper letters, 61 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2023-11-19 07:46:24,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 603 flow [2023-11-19 07:46:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:24,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 784 transitions. [2023-11-19 07:46:24,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242349048800662 [2023-11-19 07:46:24,225 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 784 transitions. [2023-11-19 07:46:24,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 784 transitions. [2023-11-19 07:46:24,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:24,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 784 transitions. [2023-11-19 07:46:24,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 130.66666666666666) internal successors, (784), 6 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:24,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:24,237 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 403.0) internal successors, (2821), 7 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:24,237 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 302 flow. Second operand 6 states and 784 transitions. [2023-11-19 07:46:24,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 603 flow [2023-11-19 07:46:24,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 599 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:24,260 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 420 flow [2023-11-19 07:46:24,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=420, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2023-11-19 07:46:24,262 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -9 predicate places. [2023-11-19 07:46:24,262 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 420 flow [2023-11-19 07:46:24,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:24,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:24,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:24,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:46:24,264 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:24,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:24,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1179812810, now seen corresponding path program 1 times [2023-11-19 07:46:24,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:24,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962485000] [2023-11-19 07:46:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:24,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:24,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:24,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962485000] [2023-11-19 07:46:24,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962485000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:24,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:24,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:46:24,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5207378] [2023-11-19 07:46:24,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:24,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:46:24,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:46:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:46:25,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 403 [2023-11-19 07:46:25,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 420 flow. Second operand has 9 states, 9 states have (on average 117.66666666666667) internal successors, (1059), 9 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:25,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:25,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 403 [2023-11-19 07:46:25,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:26,450 INFO L124 PetriNetUnfolderBase]: 1446/2348 cut-off events. [2023-11-19 07:46:26,450 INFO L125 PetriNetUnfolderBase]: For 3043/3049 co-relation queries the response was YES. [2023-11-19 07:46:26,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8594 conditions, 2348 events. 1446/2348 cut-off events. For 3043/3049 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13157 event pairs, 78 based on Foata normal form. 6/2334 useless extension candidates. Maximal degree in co-relation 8580. Up to 756 conditions per place. [2023-11-19 07:46:26,465 INFO L140 encePairwiseOnDemand]: 395/403 looper letters, 71 selfloop transitions, 19 changer transitions 6/98 dead transitions. [2023-11-19 07:46:26,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 98 transitions, 776 flow [2023-11-19 07:46:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:46:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:46:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1115 transitions. [2023-11-19 07:46:26,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3074165977391784 [2023-11-19 07:46:26,472 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1115 transitions. [2023-11-19 07:46:26,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1115 transitions. [2023-11-19 07:46:26,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:26,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1115 transitions. [2023-11-19 07:46:26,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 123.88888888888889) internal successors, (1115), 9 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:26,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 403.0) internal successors, (4030), 10 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:26,485 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 403.0) internal successors, (4030), 10 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:26,485 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 420 flow. Second operand 9 states and 1115 transitions. [2023-11-19 07:46:26,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 98 transitions, 776 flow [2023-11-19 07:46:26,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 98 transitions, 760 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:46:26,509 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 432 flow [2023-11-19 07:46:26,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=432, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-11-19 07:46:26,510 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2023-11-19 07:46:26,511 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 432 flow [2023-11-19 07:46:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.66666666666667) internal successors, (1059), 9 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:26,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:26,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:46:26,512 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:26,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1219135716, now seen corresponding path program 1 times [2023-11-19 07:46:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020375859] [2023-11-19 07:46:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:28,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:28,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020375859] [2023-11-19 07:46:28,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020375859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:28,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:28,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:46:28,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870534445] [2023-11-19 07:46:28,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:28,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:46:28,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:28,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:46:28,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:46:28,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 403 [2023-11-19 07:46:28,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:28,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:28,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 403 [2023-11-19 07:46:28,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:29,470 INFO L124 PetriNetUnfolderBase]: 1666/2718 cut-off events. [2023-11-19 07:46:29,470 INFO L125 PetriNetUnfolderBase]: For 4062/4072 co-relation queries the response was YES. [2023-11-19 07:46:29,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10157 conditions, 2718 events. 1666/2718 cut-off events. For 4062/4072 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15903 event pairs, 789 based on Foata normal form. 14/2709 useless extension candidates. Maximal degree in co-relation 10140. Up to 2305 conditions per place. [2023-11-19 07:46:29,488 INFO L140 encePairwiseOnDemand]: 394/403 looper letters, 81 selfloop transitions, 12 changer transitions 0/95 dead transitions. [2023-11-19 07:46:29,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 836 flow [2023-11-19 07:46:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:46:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 989 transitions. [2023-11-19 07:46:29,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3067617866004963 [2023-11-19 07:46:29,509 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 989 transitions. [2023-11-19 07:46:29,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 989 transitions. [2023-11-19 07:46:29,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:29,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 989 transitions. [2023-11-19 07:46:29,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.625) internal successors, (989), 8 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:29,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 403.0) internal successors, (3627), 9 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:29,521 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 403.0) internal successors, (3627), 9 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:29,521 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 432 flow. Second operand 8 states and 989 transitions. [2023-11-19 07:46:29,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 836 flow [2023-11-19 07:46:29,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 800 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:46:29,550 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 542 flow [2023-11-19 07:46:29,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=542, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2023-11-19 07:46:29,551 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 4 predicate places. [2023-11-19 07:46:29,551 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 542 flow [2023-11-19 07:46:29,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:29,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:29,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:29,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:46:29,552 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:29,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash -327690476, now seen corresponding path program 2 times [2023-11-19 07:46:29,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:29,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572610622] [2023-11-19 07:46:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:29,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:30,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:30,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572610622] [2023-11-19 07:46:30,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572610622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:30,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:30,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:46:30,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490312135] [2023-11-19 07:46:30,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:30,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:46:30,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:30,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:46:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:46:31,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 403 [2023-11-19 07:46:31,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 542 flow. Second operand has 9 states, 9 states have (on average 116.55555555555556) internal successors, (1049), 9 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:31,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:31,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 403 [2023-11-19 07:46:31,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:32,430 INFO L124 PetriNetUnfolderBase]: 1917/3108 cut-off events. [2023-11-19 07:46:32,430 INFO L125 PetriNetUnfolderBase]: For 5435/5445 co-relation queries the response was YES. [2023-11-19 07:46:32,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11829 conditions, 3108 events. 1917/3108 cut-off events. For 5435/5445 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18474 event pairs, 411 based on Foata normal form. 14/3101 useless extension candidates. Maximal degree in co-relation 11807. Up to 2324 conditions per place. [2023-11-19 07:46:32,455 INFO L140 encePairwiseOnDemand]: 394/403 looper letters, 83 selfloop transitions, 22 changer transitions 0/107 dead transitions. [2023-11-19 07:46:32,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 107 transitions, 987 flow [2023-11-19 07:46:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:46:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:46:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1099 transitions. [2023-11-19 07:46:32,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30300523848910943 [2023-11-19 07:46:32,463 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1099 transitions. [2023-11-19 07:46:32,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1099 transitions. [2023-11-19 07:46:32,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:32,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1099 transitions. [2023-11-19 07:46:32,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.11111111111111) internal successors, (1099), 9 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:32,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 403.0) internal successors, (4030), 10 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:32,479 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 403.0) internal successors, (4030), 10 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:32,479 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 542 flow. Second operand 9 states and 1099 transitions. [2023-11-19 07:46:32,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 107 transitions, 987 flow [2023-11-19 07:46:32,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 107 transitions, 973 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:32,526 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 718 flow [2023-11-19 07:46:32,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=718, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-11-19 07:46:32,527 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 15 predicate places. [2023-11-19 07:46:32,527 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 718 flow [2023-11-19 07:46:32,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.55555555555556) internal successors, (1049), 9 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:32,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:32,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:32,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:46:32,529 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 07:46:32,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:32,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1662691000, now seen corresponding path program 3 times [2023-11-19 07:46:32,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:32,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627445330] [2023-11-19 07:46:32,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:32,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:33,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:33,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627445330] [2023-11-19 07:46:33,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627445330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:33,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:33,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:46:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725182387] [2023-11-19 07:46:33,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:33,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:46:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:33,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:46:33,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:46:34,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 403 [2023-11-19 07:46:34,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 116.55555555555556) internal successors, (1049), 9 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:34,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:34,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 403 [2023-11-19 07:46:34,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand