./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:15:19,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:15:19,560 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:15:19,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:15:19,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:15:19,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:15:19,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:15:19,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:15:19,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:15:19,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:15:19,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:15:19,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:15:19,601 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:15:19,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:15:19,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:15:19,603 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:15:19,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:15:19,604 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:15:19,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:15:19,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:15:19,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:15:19,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:15:19,607 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:15:19,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:15:19,608 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:15:19,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:15:19,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:15:19,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:15:19,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:19,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:15:19,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:15:19,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:15:19,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:15:19,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:15:19,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:15:19,614 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:15:19,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:15:19,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:15:19,615 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:15:19,615 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_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2023-11-12 02:15:19,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:15:19,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:15:19,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:15:19,899 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:15:19,899 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:15:19,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2023-11-12 02:15:23,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:15:24,100 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:15:24,101 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2023-11-12 02:15:24,146 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/data/0a88035bd/4d3665437aa144af8540de952aac1a9a/FLAG21e4f2835 [2023-11-12 02:15:24,176 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/data/0a88035bd/4d3665437aa144af8540de952aac1a9a [2023-11-12 02:15:24,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:15:24,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:15:24,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:24,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:15:24,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:15:24,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:24" (1/1) ... [2023-11-12 02:15:24,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d79aaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:24, skipping insertion in model container [2023-11-12 02:15:24,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:24" (1/1) ... [2023-11-12 02:15:24,312 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:15:24,499 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:15:25,331 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2023-11-12 02:15:25,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:25,398 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:15:25,420 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 02:15:25,526 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/sv-benchmarks/c/ldv-races/race-2_2-container_of.i[75002,75015] [2023-11-12 02:15:25,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:25,760 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:25,761 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:25,761 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:25,771 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:15:25,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25 WrapperNode [2023-11-12 02:15:25,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:25,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:25,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:15:25,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:15:25,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,867 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2023-11-12 02:15:25,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:25,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:15:25,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:15:25,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:15:25,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:15:25,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:15:25,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:15:25,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:15:25,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (1/1) ... [2023-11-12 02:15:25,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:25,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:26,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:15:26,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcd08571-4f80-49d7-8f2c-73f986561816/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:15:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:15:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:15:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:15:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:15:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:15:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:15:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:15:26,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:15:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-12 02:15:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-12 02:15:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:15:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:15:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:15:26,070 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:15:26,463 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:15:26,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:15:26,832 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:15:26,865 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:15:26,866 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:15:26,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:26 BoogieIcfgContainer [2023-11-12 02:15:26,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:15:26,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:15:26,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:15:26,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:15:26,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:15:24" (1/3) ... [2023-11-12 02:15:26,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713e2017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:26, skipping insertion in model container [2023-11-12 02:15:26,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:25" (2/3) ... [2023-11-12 02:15:26,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713e2017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:26, skipping insertion in model container [2023-11-12 02:15:26,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:26" (3/3) ... [2023-11-12 02:15:26,885 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2023-11-12 02:15:26,895 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:15:26,908 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:15:26,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 02:15:26,909 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:15:27,009 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:15:27,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 165 transitions, 344 flow [2023-11-12 02:15:27,150 INFO L124 PetriNetUnfolderBase]: 8/211 cut-off events. [2023-11-12 02:15:27,150 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:15:27,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 211 events. 8/211 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 378 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2023-11-12 02:15:27,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 165 transitions, 344 flow [2023-11-12 02:15:27,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2023-11-12 02:15:27,166 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:15:27,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 149 transitions, 310 flow [2023-11-12 02:15:27,180 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 149 transitions, 310 flow [2023-11-12 02:15:27,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 149 transitions, 310 flow [2023-11-12 02:15:27,227 INFO L124 PetriNetUnfolderBase]: 5/184 cut-off events. [2023-11-12 02:15:27,227 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:15:27,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 5/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 309 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2023-11-12 02:15:27,232 INFO L119 LiptonReduction]: Number of co-enabled transitions 2600 [2023-11-12 02:15:39,680 INFO L134 LiptonReduction]: Checked pairs total: 3632 [2023-11-12 02:15:39,680 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-11-12 02:15:39,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:15:39,707 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5ba618d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:15:39,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-12 02:15:39,723 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:15:39,724 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-12 02:15:39,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:15:39,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:39,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:15:39,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-12 02:15:39,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:39,734 INFO L85 PathProgramCache]: Analyzing trace with hash 17201993, now seen corresponding path program 1 times [2023-11-12 02:15:39,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:39,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932889732] [2023-11-12 02:15:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:39,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932889732] [2023-11-12 02:15:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932889732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:40,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:40,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912773694] [2023-11-12 02:15:40,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:40,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:40,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:40,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:40,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 322 [2023-11-12 02:15:40,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:40,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:40,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 322 [2023-11-12 02:15:40,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:40,797 INFO L124 PetriNetUnfolderBase]: 218/420 cut-off events. [2023-11-12 02:15:40,797 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-12 02:15:40,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 420 events. 218/420 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1893 event pairs, 112 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 766. Up to 313 conditions per place. [2023-11-12 02:15:40,803 INFO L140 encePairwiseOnDemand]: 314/322 looper letters, 25 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-11-12 02:15:40,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 142 flow [2023-11-12 02:15:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:40,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-11-12 02:15:40,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453416149068323 [2023-11-12 02:15:40,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-11-12 02:15:40,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-11-12 02:15:40,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:40,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-11-12 02:15:40,833 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) [2023-11-12 02:15:40,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:40,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:40,842 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 62 flow. Second operand 3 states and 438 transitions. [2023-11-12 02:15:40,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 142 flow [2023-11-12 02:15:40,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:15:40,848 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 104 flow [2023-11-12 02:15:40,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2023-11-12 02:15:40,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-11-12 02:15:40,855 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 104 flow [2023-11-12 02:15:40,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:40,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:40,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:15:40,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:15:40,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-12 02:15:40,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash 533263046, now seen corresponding path program 1 times [2023-11-12 02:15:40,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:40,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966142441] [2023-11-12 02:15:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:40,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:41,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966142441] [2023-11-12 02:15:41,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966142441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:41,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:41,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:15:41,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692035203] [2023-11-12 02:15:41,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:41,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:41,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 322 [2023-11-12 02:15:41,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:41,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 322 [2023-11-12 02:15:41,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:41,471 INFO L124 PetriNetUnfolderBase]: 313/573 cut-off events. [2023-11-12 02:15:41,471 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2023-11-12 02:15:41,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1606 conditions, 573 events. 313/573 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2606 event pairs, 149 based on Foata normal form. 17/588 useless extension candidates. Maximal degree in co-relation 355. Up to 462 conditions per place. [2023-11-12 02:15:41,481 INFO L140 encePairwiseOnDemand]: 315/322 looper letters, 31 selfloop transitions, 9 changer transitions 2/42 dead transitions. [2023-11-12 02:15:41,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 242 flow [2023-11-12 02:15:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-11-12 02:15:41,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45445134575569357 [2023-11-12 02:15:41,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-11-12 02:15:41,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-11-12 02:15:41,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:41,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-11-12 02:15:41,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,502 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 104 flow. Second operand 3 states and 439 transitions. [2023-11-12 02:15:41,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 242 flow [2023-11-12 02:15:41,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:15:41,507 INFO L231 Difference]: Finished difference. Result has 31 places, 36 transitions, 161 flow [2023-11-12 02:15:41,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=31, PETRI_TRANSITIONS=36} [2023-11-12 02:15:41,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-11-12 02:15:41,509 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 36 transitions, 161 flow [2023-11-12 02:15:41,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:41,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:41,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:15:41,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-12 02:15:41,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1141243361, now seen corresponding path program 1 times [2023-11-12 02:15:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:41,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952624755] [2023-11-12 02:15:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:41,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:41,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:41,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952624755] [2023-11-12 02:15:41,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952624755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:41,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:41,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:41,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914052644] [2023-11-12 02:15:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:41,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:41,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 322 [2023-11-12 02:15:41,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 36 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:41,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 322 [2023-11-12 02:15:41,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:41,798 INFO L124 PetriNetUnfolderBase]: 72/144 cut-off events. [2023-11-12 02:15:41,799 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-12 02:15:41,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 144 events. 72/144 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 421 event pairs, 15 based on Foata normal form. 16/159 useless extension candidates. Maximal degree in co-relation 409. Up to 104 conditions per place. [2023-11-12 02:15:41,802 INFO L140 encePairwiseOnDemand]: 320/322 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-12 02:15:41,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 132 flow [2023-11-12 02:15:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-11-12 02:15:41,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730848861283644 [2023-11-12 02:15:41,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-11-12 02:15:41,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-11-12 02:15:41,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:41,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-11-12 02:15:41,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,816 INFO L175 Difference]: Start difference. First operand has 31 places, 36 transitions, 161 flow. Second operand 3 states and 457 transitions. [2023-11-12 02:15:41,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 132 flow [2023-11-12 02:15:41,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:41,821 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 50 flow [2023-11-12 02:15:41,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-11-12 02:15:41,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2023-11-12 02:15:41,827 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 50 flow [2023-11-12 02:15:41,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:41,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:41,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:15:41,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-12 02:15:41,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:41,832 INFO L85 PathProgramCache]: Analyzing trace with hash 28303264, now seen corresponding path program 1 times [2023-11-12 02:15:41,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73164163] [2023-11-12 02:15:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:43,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:43,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:43,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73164163] [2023-11-12 02:15:43,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73164163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:43,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:43,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:15:43,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006946478] [2023-11-12 02:15:43,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:43,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:15:43,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:15:43,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:15:44,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 322 [2023-11-12 02:15:44,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 50 flow. Second operand has 10 states, 10 states have (on average 125.7) internal successors, (1257), 10 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:44,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:44,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 322 [2023-11-12 02:15:44,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:45,396 INFO L124 PetriNetUnfolderBase]: 134/282 cut-off events. [2023-11-12 02:15:45,396 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-12 02:15:45,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 282 events. 134/282 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1131 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 702. Up to 109 conditions per place. [2023-11-12 02:15:45,399 INFO L140 encePairwiseOnDemand]: 312/322 looper letters, 54 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2023-11-12 02:15:45,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 71 transitions, 345 flow [2023-11-12 02:15:45,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:15:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-12 02:15:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1312 transitions. [2023-11-12 02:15:45,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074534161490683 [2023-11-12 02:15:45,405 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1312 transitions. [2023-11-12 02:15:45,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1312 transitions. [2023-11-12 02:15:45,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:45,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1312 transitions. [2023-11-12 02:15:45,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.2) internal successors, (1312), 10 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 322.0) internal successors, (3542), 11 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,420 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 322.0) internal successors, (3542), 11 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,420 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 50 flow. Second operand 10 states and 1312 transitions. [2023-11-12 02:15:45,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 71 transitions, 345 flow [2023-11-12 02:15:45,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 71 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:45,423 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 158 flow [2023-11-12 02:15:45,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=158, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-11-12 02:15:45,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2023-11-12 02:15:45,425 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 158 flow [2023-11-12 02:15:45,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.7) internal successors, (1257), 10 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:45,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:45,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:45,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:15:45,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-12 02:15:45,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:45,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1438920808, now seen corresponding path program 2 times [2023-11-12 02:15:45,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:45,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447040582] [2023-11-12 02:15:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:45,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:46,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:46,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447040582] [2023-11-12 02:15:46,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447040582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:46,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:46,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:15:46,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367617588] [2023-11-12 02:15:46,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:46,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:15:46,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:15:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:15:47,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 322 [2023-11-12 02:15:47,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 130.42857142857142) internal successors, (913), 7 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:47,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 322 [2023-11-12 02:15:47,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:47,375 INFO L124 PetriNetUnfolderBase]: 151/334 cut-off events. [2023-11-12 02:15:47,376 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2023-11-12 02:15:47,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 334 events. 151/334 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1471 event pairs, 22 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 1028. Up to 124 conditions per place. [2023-11-12 02:15:47,380 INFO L140 encePairwiseOnDemand]: 314/322 looper letters, 38 selfloop transitions, 20 changer transitions 0/58 dead transitions. [2023-11-12 02:15:47,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 382 flow [2023-11-12 02:15:47,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:15:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:15:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 940 transitions. [2023-11-12 02:15:47,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.417036379769299 [2023-11-12 02:15:47,386 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 940 transitions. [2023-11-12 02:15:47,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 940 transitions. [2023-11-12 02:15:47,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:47,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 940 transitions. [2023-11-12 02:15:47,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.28571428571428) internal successors, (940), 7 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 322.0) internal successors, (2576), 8 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,396 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 322.0) internal successors, (2576), 8 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,397 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 158 flow. Second operand 7 states and 940 transitions. [2023-11-12 02:15:47,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 382 flow [2023-11-12 02:15:47,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:15:47,403 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 242 flow [2023-11-12 02:15:47,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-11-12 02:15:47,405 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2023-11-12 02:15:47,406 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 242 flow [2023-11-12 02:15:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.42857142857142) internal successors, (913), 7 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:47,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:47,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:47,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:15:47,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-12 02:15:47,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash 398162248, now seen corresponding path program 1 times [2023-11-12 02:15:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:47,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882199036] [2023-11-12 02:15:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:47,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882199036] [2023-11-12 02:15:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882199036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:49,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:49,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:15:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489978439] [2023-11-12 02:15:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:49,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:15:49,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:49,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:15:49,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:15:51,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 322 [2023-11-12 02:15:51,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 121.3076923076923) internal successors, (1577), 13 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:51,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:51,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 322 [2023-11-12 02:15:51,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:52,676 INFO L124 PetriNetUnfolderBase]: 185/416 cut-off events. [2023-11-12 02:15:52,676 INFO L125 PetriNetUnfolderBase]: For 727/727 co-relation queries the response was YES. [2023-11-12 02:15:52,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 416 events. 185/416 cut-off events. For 727/727 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1956 event pairs, 61 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 1460. Up to 332 conditions per place. [2023-11-12 02:15:52,681 INFO L140 encePairwiseOnDemand]: 309/322 looper letters, 50 selfloop transitions, 31 changer transitions 14/95 dead transitions. [2023-11-12 02:15:52,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 773 flow [2023-11-12 02:15:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:15:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-12 02:15:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1749 transitions. [2023-11-12 02:15:52,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38797692990239574 [2023-11-12 02:15:52,690 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1749 transitions. [2023-11-12 02:15:52,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1749 transitions. [2023-11-12 02:15:52,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:52,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1749 transitions. [2023-11-12 02:15:52,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 124.92857142857143) internal successors, (1749), 14 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:52,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 322.0) internal successors, (4830), 15 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:52,709 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 322.0) internal successors, (4830), 15 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:52,710 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 242 flow. Second operand 14 states and 1749 transitions. [2023-11-12 02:15:52,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 773 flow [2023-11-12 02:15:52,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 95 transitions, 715 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-12 02:15:52,718 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 536 flow [2023-11-12 02:15:52,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=536, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-11-12 02:15:52,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2023-11-12 02:15:52,721 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 536 flow [2023-11-12 02:15:52,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 121.3076923076923) internal successors, (1577), 13 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:52,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:52,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:52,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:15:52,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-12 02:15:52,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1662892452, now seen corresponding path program 2 times [2023-11-12 02:15:52,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:52,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262623730] [2023-11-12 02:15:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:52,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:54,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262623730] [2023-11-12 02:15:54,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262623730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:54,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:54,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:15:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74264172] [2023-11-12 02:15:54,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:54,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:15:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:15:54,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:15:56,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 322 [2023-11-12 02:15:56,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 536 flow. Second operand has 13 states, 13 states have (on average 122.3076923076923) internal successors, (1590), 13 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:56,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:56,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 322 [2023-11-12 02:15:56,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:57,994 INFO L124 PetriNetUnfolderBase]: 191/445 cut-off events. [2023-11-12 02:15:57,994 INFO L125 PetriNetUnfolderBase]: For 987/987 co-relation queries the response was YES. [2023-11-12 02:15:57,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1855 conditions, 445 events. 191/445 cut-off events. For 987/987 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2209 event pairs, 24 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 1834. Up to 196 conditions per place. [2023-11-12 02:15:58,001 INFO L140 encePairwiseOnDemand]: 308/322 looper letters, 90 selfloop transitions, 52 changer transitions 13/155 dead transitions. [2023-11-12 02:15:58,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 155 transitions, 1409 flow [2023-11-12 02:15:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:15:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-12 02:15:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2034 transitions. [2023-11-12 02:15:58,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39479813664596275 [2023-11-12 02:15:58,012 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2034 transitions. [2023-11-12 02:15:58,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2034 transitions. [2023-11-12 02:15:58,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:58,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2034 transitions. [2023-11-12 02:15:58,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 127.125) internal successors, (2034), 16 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:58,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 322.0) internal successors, (5474), 17 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:58,038 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 322.0) internal successors, (5474), 17 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:58,038 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 536 flow. Second operand 16 states and 2034 transitions. [2023-11-12 02:15:58,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 155 transitions, 1409 flow [2023-11-12 02:15:58,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 155 transitions, 1317 flow, removed 44 selfloop flow, removed 4 redundant places. [2023-11-12 02:15:58,054 INFO L231 Difference]: Finished difference. Result has 79 places, 105 transitions, 961 flow [2023-11-12 02:15:58,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=961, PETRI_PLACES=79, PETRI_TRANSITIONS=105} [2023-11-12 02:15:58,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-11-12 02:15:58,055 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 105 transitions, 961 flow [2023-11-12 02:15:58,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 122.3076923076923) internal successors, (1590), 13 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:58,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:58,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:58,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:15:58,057 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-12 02:15:58,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:58,058 INFO L85 PathProgramCache]: Analyzing trace with hash 148291016, now seen corresponding path program 3 times [2023-11-12 02:15:58,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:58,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960128699] [2023-11-12 02:15:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:58,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:59,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:59,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960128699] [2023-11-12 02:15:59,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960128699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:59,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:59,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:15:59,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123308917] [2023-11-12 02:15:59,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:59,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:15:59,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:15:59,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:16:01,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 322 [2023-11-12 02:16:01,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 105 transitions, 961 flow. Second operand has 13 states, 13 states have (on average 122.3076923076923) internal successors, (1590), 13 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:01,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:01,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 322 [2023-11-12 02:16:01,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:16:02,801 INFO L124 PetriNetUnfolderBase]: 248/614 cut-off events. [2023-11-12 02:16:02,801 INFO L125 PetriNetUnfolderBase]: For 2034/2034 co-relation queries the response was YES. [2023-11-12 02:16:02,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 614 events. 248/614 cut-off events. For 2034/2034 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3551 event pairs, 91 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 2884. Up to 364 conditions per place. [2023-11-12 02:16:02,811 INFO L140 encePairwiseOnDemand]: 309/322 looper letters, 108 selfloop transitions, 56 changer transitions 13/177 dead transitions. [2023-11-12 02:16:02,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 177 transitions, 1830 flow [2023-11-12 02:16:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:16:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-12 02:16:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1900 transitions. [2023-11-12 02:16:02,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39337474120082816 [2023-11-12 02:16:02,820 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1900 transitions. [2023-11-12 02:16:02,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1900 transitions. [2023-11-12 02:16:02,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:16:02,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1900 transitions. [2023-11-12 02:16:02,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.66666666666667) internal successors, (1900), 15 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:02,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 322.0) internal successors, (5152), 16 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:02,840 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 322.0) internal successors, (5152), 16 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:02,840 INFO L175 Difference]: Start difference. First operand has 79 places, 105 transitions, 961 flow. Second operand 15 states and 1900 transitions. [2023-11-12 02:16:02,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 177 transitions, 1830 flow [2023-11-12 02:16:02,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 177 transitions, 1774 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-11-12 02:16:02,862 INFO L231 Difference]: Finished difference. Result has 97 places, 132 transitions, 1396 flow [2023-11-12 02:16:02,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1396, PETRI_PLACES=97, PETRI_TRANSITIONS=132} [2023-11-12 02:16:02,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2023-11-12 02:16:02,863 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 132 transitions, 1396 flow [2023-11-12 02:16:02,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 122.3076923076923) internal successors, (1590), 13 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:02,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:02,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:02,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:16:02,865 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-12 02:16:02,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:02,866 INFO L85 PathProgramCache]: Analyzing trace with hash -192067112, now seen corresponding path program 4 times [2023-11-12 02:16:02,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:02,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085033173] [2023-11-12 02:16:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:02,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:04,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:04,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085033173] [2023-11-12 02:16:04,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085033173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:04,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:04,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:16:04,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610349603] [2023-11-12 02:16:04,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:04,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:16:04,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:04,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:16:04,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:16:06,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 322 [2023-11-12 02:16:06,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 132 transitions, 1396 flow. Second operand has 13 states, 13 states have (on average 122.3076923076923) internal successors, (1590), 13 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:06,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:06,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 322 [2023-11-12 02:16:06,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand