./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/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_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/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_e14694ae-17f9-4f36-9c96-967f74f9e574/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 dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:25:46,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:25:46,511 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:25:46,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:25:46,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:25:46,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:25:46,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:25:46,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:25:46,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:25:46,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:25:46,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:25:46,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:25:46,568 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:25:46,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:25:46,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:25:46,571 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:25:46,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:25:46,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:25:46,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:25:46,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:25:46,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:25:46,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:25:46,574 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:25:46,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:25:46,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:25:46,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:25:46,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:25:46,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:25:46,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:46,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:25:46,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:25:46,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:25:46,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:25:46,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:25:46,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:25:46,582 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:25:46,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:25:46,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:25:46,582 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:25:46,583 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_e14694ae-17f9-4f36-9c96-967f74f9e574/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2023-11-12 02:25:46,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:25:46,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:25:46,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:25:46,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:25:46,953 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:25:46,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-12 02:25:50,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:25:50,339 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:25:50,339 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-12 02:25:50,350 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/data/a9007fb78/bc8f2a1d02e14092920d5bfce8225db8/FLAGfaae8eeb4 [2023-11-12 02:25:50,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/data/a9007fb78/bc8f2a1d02e14092920d5bfce8225db8 [2023-11-12 02:25:50,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:25:50,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:25:50,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:50,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:25:50,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:25:50,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3b352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50, skipping insertion in model container [2023-11-12 02:25:50,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:25:50,623 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_e14694ae-17f9-4f36-9c96-967f74f9e574/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4151,4164] [2023-11-12 02:25:50,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:50,651 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:25:50,686 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_e14694ae-17f9-4f36-9c96-967f74f9e574/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4151,4164] [2023-11-12 02:25:50,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:50,702 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:25:50,702 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:25:50,710 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:25:50,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50 WrapperNode [2023-11-12 02:25:50,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:50,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:50,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:25:50,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:25:50,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,774 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 316 [2023-11-12 02:25:50,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:50,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:25:50,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:25:50,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:25:50,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:25:50,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:25:50,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:25:50,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:25:50,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (1/1) ... [2023-11-12 02:25:50,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:50,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:50,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:25:50,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:25:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:25:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:25:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:25:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:25:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:25:50,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:25:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:25:50,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:25:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:25:50,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:25:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 02:25:50,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 02:25:50,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:25:50,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:25:50,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:25:50,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:25:50,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:25:50,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:25:50,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:25:50,939 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 02:25:51,070 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:25:51,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:25:51,636 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:25:51,934 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:25:51,934 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:25:51,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:51 BoogieIcfgContainer [2023-11-12 02:25:51,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:25:51,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:25:51,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:25:51,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:25:51,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:25:50" (1/3) ... [2023-11-12 02:25:51,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2021ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:51, skipping insertion in model container [2023-11-12 02:25:51,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:50" (2/3) ... [2023-11-12 02:25:51,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2021ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:51, skipping insertion in model container [2023-11-12 02:25:51,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:51" (3/3) ... [2023-11-12 02:25:51,953 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-11-12 02:25:51,964 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:25:51,976 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:25:51,976 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:25:51,976 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:25:52,144 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:25:52,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 239 transitions, 506 flow [2023-11-12 02:25:52,364 INFO L124 PetriNetUnfolderBase]: 18/235 cut-off events. [2023-11-12 02:25:52,365 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:25:52,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 18/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 123 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 195. Up to 2 conditions per place. [2023-11-12 02:25:52,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 239 transitions, 506 flow [2023-11-12 02:25:52,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 222 transitions, 468 flow [2023-11-12 02:25:52,399 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:25:52,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 222 transitions, 468 flow [2023-11-12 02:25:52,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 222 transitions, 468 flow [2023-11-12 02:25:52,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 222 transitions, 468 flow [2023-11-12 02:25:52,491 INFO L124 PetriNetUnfolderBase]: 18/222 cut-off events. [2023-11-12 02:25:52,491 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:25:52,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 222 events. 18/222 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 119 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 195. Up to 2 conditions per place. [2023-11-12 02:25:52,498 INFO L119 LiptonReduction]: Number of co-enabled transitions 2160 [2023-11-12 02:26:04,831 INFO L134 LiptonReduction]: Checked pairs total: 3398 [2023-11-12 02:26:04,832 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-11-12 02:26:04,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:26:04,856 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;@63417d96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:26:04,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-12 02:26:04,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:26:04,868 INFO L124 PetriNetUnfolderBase]: 6/34 cut-off events. [2023-11-12 02:26:04,868 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:26:04,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:04,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:04,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:26:04,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:04,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1139717756, now seen corresponding path program 1 times [2023-11-12 02:26:04,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:04,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671137246] [2023-11-12 02:26:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:05,455 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 02:26:05,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671137246] [2023-11-12 02:26:05,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671137246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:05,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:05,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:26:05,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025177350] [2023-11-12 02:26:05,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:05,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:05,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:05,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 463 [2023-11-12 02:26:05,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:05,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:05,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 463 [2023-11-12 02:26:05,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:06,142 INFO L124 PetriNetUnfolderBase]: 1994/2770 cut-off events. [2023-11-12 02:26:06,142 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2023-11-12 02:26:06,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 2770 events. 1994/2770 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10611 event pairs, 624 based on Foata normal form. 1/2025 useless extension candidates. Maximal degree in co-relation 4188. Up to 1445 conditions per place. [2023-11-12 02:26:06,175 INFO L140 encePairwiseOnDemand]: 459/463 looper letters, 51 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2023-11-12 02:26:06,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 263 flow [2023-11-12 02:26:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:26:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-11-12 02:26:06,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003599712023038 [2023-11-12 02:26:06,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-11-12 02:26:06,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-11-12 02:26:06,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:06,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-11-12 02:26:06,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 02:26:06,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states 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 02:26:06,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states 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 02:26:06,240 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 94 flow. Second operand 3 states and 695 transitions. [2023-11-12 02:26:06,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 263 flow [2023-11-12 02:26:06,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 57 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-12 02:26:06,252 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 97 flow [2023-11-12 02:26:06,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-11-12 02:26:06,260 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-11-12 02:26:06,261 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 97 flow [2023-11-12 02:26:06,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:06,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:06,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:06,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:26:06,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:26:06,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:06,276 INFO L85 PathProgramCache]: Analyzing trace with hash -191847114, now seen corresponding path program 1 times [2023-11-12 02:26:06,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:06,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944208308] [2023-11-12 02:26:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:06,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:06,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944208308] [2023-11-12 02:26:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944208308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:06,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:06,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:06,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120075430] [2023-11-12 02:26:06,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:06,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:06,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:06,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 463 [2023-11-12 02:26:06,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 02:26:06,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:06,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 463 [2023-11-12 02:26:06,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:07,224 INFO L124 PetriNetUnfolderBase]: 2934/3973 cut-off events. [2023-11-12 02:26:07,224 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2023-11-12 02:26:07,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8691 conditions, 3973 events. 2934/3973 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16134 event pairs, 1148 based on Foata normal form. 134/3491 useless extension candidates. Maximal degree in co-relation 3820. Up to 2058 conditions per place. [2023-11-12 02:26:07,255 INFO L140 encePairwiseOnDemand]: 460/463 looper letters, 57 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-12 02:26:07,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 276 flow [2023-11-12 02:26:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:26:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2023-11-12 02:26:07,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946004319654428 [2023-11-12 02:26:07,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2023-11-12 02:26:07,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2023-11-12 02:26:07,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:07,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2023-11-12 02:26:07,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 02:26:07,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states 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 02:26:07,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states 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 02:26:07,273 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 97 flow. Second operand 3 states and 687 transitions. [2023-11-12 02:26:07,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 276 flow [2023-11-12 02:26:07,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 61 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:26:07,283 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 108 flow [2023-11-12 02:26:07,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-11-12 02:26:07,285 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-12 02:26:07,285 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 108 flow [2023-11-12 02:26:07,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 02:26:07,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:07,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:07,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:26:07,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:26:07,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:07,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1906027721, now seen corresponding path program 1 times [2023-11-12 02:26:07,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:07,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217580119] [2023-11-12 02:26:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:07,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:07,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217580119] [2023-11-12 02:26:07,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217580119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:07,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:07,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:07,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721560419] [2023-11-12 02:26:07,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:07,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:07,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:07,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 463 [2023-11-12 02:26:07,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 02:26:07,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:07,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 463 [2023-11-12 02:26:07,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:08,202 INFO L124 PetriNetUnfolderBase]: 3874/5391 cut-off events. [2023-11-12 02:26:08,202 INFO L125 PetriNetUnfolderBase]: For 1568/1568 co-relation queries the response was YES. [2023-11-12 02:26:08,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12232 conditions, 5391 events. 3874/5391 cut-off events. For 1568/1568 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 23840 event pairs, 1522 based on Foata normal form. 198/5187 useless extension candidates. Maximal degree in co-relation 7128. Up to 3049 conditions per place. [2023-11-12 02:26:08,245 INFO L140 encePairwiseOnDemand]: 460/463 looper letters, 61 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-12 02:26:08,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 310 flow [2023-11-12 02:26:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:26:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-11-12 02:26:08,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49604031677465804 [2023-11-12 02:26:08,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-11-12 02:26:08,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-11-12 02:26:08,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:08,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-11-12 02:26:08,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 02:26:08,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states 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 02:26:08,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states 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 02:26:08,258 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 108 flow. Second operand 3 states and 689 transitions. [2023-11-12 02:26:08,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 310 flow [2023-11-12 02:26:08,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 65 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:26:08,308 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 120 flow [2023-11-12 02:26:08,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-11-12 02:26:08,310 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-11-12 02:26:08,310 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 120 flow [2023-11-12 02:26:08,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states 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 02:26:08,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:08,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:08,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:26:08,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:26:08,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:08,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1111712349, now seen corresponding path program 1 times [2023-11-12 02:26:08,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:08,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555249598] [2023-11-12 02:26:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:08,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:26:08,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:08,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555249598] [2023-11-12 02:26:08,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555249598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:08,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:08,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807658439] [2023-11-12 02:26:08,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:08,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:26:08,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:08,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:26:08,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:26:08,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-11-12 02:26:08,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states 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 02:26:08,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:08,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-11-12 02:26:08,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:09,852 INFO L124 PetriNetUnfolderBase]: 5429/7641 cut-off events. [2023-11-12 02:26:09,853 INFO L125 PetriNetUnfolderBase]: For 2833/2833 co-relation queries the response was YES. [2023-11-12 02:26:09,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17799 conditions, 7641 events. 5429/7641 cut-off events. For 2833/2833 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 35216 event pairs, 4378 based on Foata normal form. 156/7741 useless extension candidates. Maximal degree in co-relation 11106. Up to 5248 conditions per place. [2023-11-12 02:26:09,915 INFO L140 encePairwiseOnDemand]: 459/463 looper letters, 66 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2023-11-12 02:26:09,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 344 flow [2023-11-12 02:26:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:26:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:26:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 864 transitions. [2023-11-12 02:26:09,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46652267818574517 [2023-11-12 02:26:09,919 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 864 transitions. [2023-11-12 02:26:09,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 864 transitions. [2023-11-12 02:26:09,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:09,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 864 transitions. [2023-11-12 02:26:09,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 0 states have call successors, (0), 0 states 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 02:26:09,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states 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 02:26:09,931 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states 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 02:26:09,931 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 120 flow. Second operand 4 states and 864 transitions. [2023-11-12 02:26:09,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 344 flow [2023-11-12 02:26:09,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:26:09,938 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 138 flow [2023-11-12 02:26:09,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-11-12 02:26:09,940 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-11-12 02:26:09,940 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 138 flow [2023-11-12 02:26:09,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states 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 02:26:09,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:09,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:09,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:26:09,942 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:26:09,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash 334222298, now seen corresponding path program 1 times [2023-11-12 02:26:09,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:09,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277787015] [2023-11-12 02:26:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:09,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:26:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277787015] [2023-11-12 02:26:10,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277787015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:10,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:10,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:26:10,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131756388] [2023-11-12 02:26:10,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:10,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:26:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:10,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:26:10,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:26:10,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-11-12 02:26:10,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states 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 02:26:10,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:10,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-11-12 02:26:10,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:11,803 INFO L124 PetriNetUnfolderBase]: 7689/10994 cut-off events. [2023-11-12 02:26:11,803 INFO L125 PetriNetUnfolderBase]: For 4080/4080 co-relation queries the response was YES. [2023-11-12 02:26:11,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25117 conditions, 10994 events. 7689/10994 cut-off events. For 4080/4080 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 55597 event pairs, 6450 based on Foata normal form. 306/11263 useless extension candidates. Maximal degree in co-relation 18182. Up to 7418 conditions per place. [2023-11-12 02:26:11,871 INFO L140 encePairwiseOnDemand]: 459/463 looper letters, 65 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-11-12 02:26:11,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 360 flow [2023-11-12 02:26:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:26:11,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:26:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 862 transitions. [2023-11-12 02:26:11,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654427645788337 [2023-11-12 02:26:11,876 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 862 transitions. [2023-11-12 02:26:11,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 862 transitions. [2023-11-12 02:26:11,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:11,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 862 transitions. [2023-11-12 02:26:11,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 0 states have call successors, (0), 0 states 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 02:26:11,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states 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 02:26:11,887 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states 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 02:26:11,887 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 138 flow. Second operand 4 states and 862 transitions. [2023-11-12 02:26:11,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 360 flow [2023-11-12 02:26:11,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 356 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:26:11,892 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 157 flow [2023-11-12 02:26:11,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-12 02:26:11,895 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-11-12 02:26:11,895 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 157 flow [2023-11-12 02:26:11,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states 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 02:26:11,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:11,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:11,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:26:11,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:26:11,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash -649689005, now seen corresponding path program 1 times [2023-11-12 02:26:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:11,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389913822] [2023-11-12 02:26:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:26:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389913822] [2023-11-12 02:26:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389913822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:26:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307224231] [2023-11-12 02:26:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:12,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:12,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:12,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:12,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:26:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:12,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:26:12,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:26:12,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:26:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:26:13,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307224231] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:26:13,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:26:13,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 16 [2023-11-12 02:26:13,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536640648] [2023-11-12 02:26:13,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:26:13,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 02:26:13,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 02:26:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:26:13,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 463 [2023-11-12 02:26:13,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 157 flow. Second operand has 17 states, 17 states have (on average 195.35294117647058) internal successors, (3321), 17 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states 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 02:26:13,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:13,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 463 [2023-11-12 02:26:13,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:18,750 INFO L124 PetriNetUnfolderBase]: 13439/19213 cut-off events. [2023-11-12 02:26:18,750 INFO L125 PetriNetUnfolderBase]: For 7843/7843 co-relation queries the response was YES. [2023-11-12 02:26:18,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45622 conditions, 19213 events. 13439/19213 cut-off events. For 7843/7843 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 107979 event pairs, 1531 based on Foata normal form. 1096/20307 useless extension candidates. Maximal degree in co-relation 36664. Up to 3384 conditions per place. [2023-11-12 02:26:18,890 INFO L140 encePairwiseOnDemand]: 449/463 looper letters, 319 selfloop transitions, 96 changer transitions 22/437 dead transitions. [2023-11-12 02:26:18,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 437 transitions, 2171 flow [2023-11-12 02:26:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-12 02:26:18,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-12 02:26:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5972 transitions. [2023-11-12 02:26:18,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4447754524465629 [2023-11-12 02:26:18,913 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5972 transitions. [2023-11-12 02:26:18,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5972 transitions. [2023-11-12 02:26:18,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:18,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5972 transitions. [2023-11-12 02:26:18,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 205.93103448275863) internal successors, (5972), 29 states have internal predecessors, (5972), 0 states have call successors, (0), 0 states 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 02:26:19,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 463.0) internal successors, (13890), 30 states have internal predecessors, (13890), 0 states have call successors, (0), 0 states 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 02:26:19,127 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 463.0) internal successors, (13890), 30 states have internal predecessors, (13890), 0 states have call successors, (0), 0 states 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 02:26:19,128 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 157 flow. Second operand 29 states and 5972 transitions. [2023-11-12 02:26:19,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 437 transitions, 2171 flow [2023-11-12 02:26:19,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 437 transitions, 2166 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:26:19,142 INFO L231 Difference]: Finished difference. Result has 103 places, 136 transitions, 991 flow [2023-11-12 02:26:19,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=991, PETRI_PLACES=103, PETRI_TRANSITIONS=136} [2023-11-12 02:26:19,145 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2023-11-12 02:26:19,146 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 136 transitions, 991 flow [2023-11-12 02:26:19,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 195.35294117647058) internal successors, (3321), 17 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states 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 02:26:19,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:19,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:19,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:26:19,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14694ae-17f9-4f36-9c96-967f74f9e574/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:19,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:26:19,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1220913267, now seen corresponding path program 1 times [2023-11-12 02:26:19,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:19,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265473906] [2023-11-12 02:26:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:19,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:26:19,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:19,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265473906] [2023-11-12 02:26:19,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265473906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:19,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:19,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:26:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282776941] [2023-11-12 02:26:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:19,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:26:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:26:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:26:20,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 463 [2023-11-12 02:26:20,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 136 transitions, 991 flow. Second operand has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states 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 02:26:20,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:20,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 463 [2023-11-12 02:26:20,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:24,368 INFO L124 PetriNetUnfolderBase]: 14078/20652 cut-off events. [2023-11-12 02:26:24,368 INFO L125 PetriNetUnfolderBase]: For 229493/230037 co-relation queries the response was YES. [2023-11-12 02:26:24,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112336 conditions, 20652 events. 14078/20652 cut-off events. For 229493/230037 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 123352 event pairs, 4245 based on Foata normal form. 112/20742 useless extension candidates. Maximal degree in co-relation 105340. Up to 13934 conditions per place. [2023-11-12 02:26:24,663 INFO L140 encePairwiseOnDemand]: 456/463 looper letters, 173 selfloop transitions, 22 changer transitions 24/234 dead transitions. [2023-11-12 02:26:24,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 234 transitions, 2107 flow [2023-11-12 02:26:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:26:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:26:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1541 transitions. [2023-11-12 02:26:24,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47547053378586857 [2023-11-12 02:26:24,671 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1541 transitions. [2023-11-12 02:26:24,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1541 transitions. [2023-11-12 02:26:24,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:24,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1541 transitions. [2023-11-12 02:26:24,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 220.14285714285714) internal successors, (1541), 7 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states 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 02:26:24,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 463.0) internal successors, (3704), 8 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states 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 02:26:24,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 463.0) internal successors, (3704), 8 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states 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 02:26:24,687 INFO L175 Difference]: Start difference. First operand has 103 places, 136 transitions, 991 flow. Second operand 7 states and 1541 transitions. [2023-11-12 02:26:24,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 234 transitions, 2107 flow [2023-11-12 02:26:25,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 234 transitions, 2030 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-12 02:26:25,564 INFO L231 Difference]: Finished difference. Result has 109 places, 147 transitions, 1099 flow [2023-11-12 02:26:25,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1099, PETRI_PLACES=109, PETRI_TRANSITIONS=147} [2023-11-12 02:26:25,565 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-11-12 02:26:25,565 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 147 transitions, 1099 flow [2023-11-12 02:26:25,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states 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 02:26:25,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:25,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:25,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:26:25,567 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:26:25,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:25,568 INFO L85 PathProgramCache]: Analyzing trace with hash 967978663, now seen corresponding path program 2 times [2023-11-12 02:26:25,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:25,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319623495] [2023-11-12 02:26:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:26:26,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319623495] [2023-11-12 02:26:26,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319623495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:26,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:26,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:26:26,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213512033] [2023-11-12 02:26:26,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:26,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:26:26,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:26,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:26:26,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:26:26,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 463 [2023-11-12 02:26:26,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 147 transitions, 1099 flow. Second operand has 7 states, 7 states have (on average 204.28571428571428) internal successors, (1430), 7 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states 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 02:26:26,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:26,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 463 [2023-11-12 02:26:26,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:31,009 INFO L124 PetriNetUnfolderBase]: 15773/23601 cut-off events. [2023-11-12 02:26:31,010 INFO L125 PetriNetUnfolderBase]: For 304414/305119 co-relation queries the response was YES. [2023-11-12 02:26:31,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134821 conditions, 23601 events. 15773/23601 cut-off events. For 304414/305119 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 149592 event pairs, 4686 based on Foata normal form. 370/23963 useless extension candidates. Maximal degree in co-relation 127814. Up to 16077 conditions per place. [2023-11-12 02:26:31,276 INFO L140 encePairwiseOnDemand]: 457/463 looper letters, 187 selfloop transitions, 31 changer transitions 60/285 dead transitions. [2023-11-12 02:26:31,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 285 transitions, 2727 flow [2023-11-12 02:26:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:26:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:26:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1957 transitions. [2023-11-12 02:26:31,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46964242860571154 [2023-11-12 02:26:31,284 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1957 transitions. [2023-11-12 02:26:31,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1957 transitions. [2023-11-12 02:26:31,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:31,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1957 transitions. [2023-11-12 02:26:31,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 217.44444444444446) internal successors, (1957), 9 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states 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 02:26:31,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states 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 02:26:31,303 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states 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 02:26:31,303 INFO L175 Difference]: Start difference. First operand has 109 places, 147 transitions, 1099 flow. Second operand 9 states and 1957 transitions. [2023-11-12 02:26:31,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 285 transitions, 2727 flow [2023-11-12 02:26:32,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 285 transitions, 2693 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-12 02:26:32,985 INFO L231 Difference]: Finished difference. Result has 122 places, 162 transitions, 1352 flow [2023-11-12 02:26:32,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1352, PETRI_PLACES=122, PETRI_TRANSITIONS=162} [2023-11-12 02:26:32,987 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2023-11-12 02:26:32,987 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 162 transitions, 1352 flow [2023-11-12 02:26:32,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.28571428571428) internal successors, (1430), 7 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states 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 02:26:32,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:32,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:32,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:26:32,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:26:32,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1413026853, now seen corresponding path program 3 times [2023-11-12 02:26:32,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:32,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441053169] [2023-11-12 02:26:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:32,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:26:33,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:33,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441053169] [2023-11-12 02:26:33,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441053169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:33,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:33,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:26:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371228419] [2023-11-12 02:26:33,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:33,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:26:33,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:33,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:26:33,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:26:33,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 463 [2023-11-12 02:26:33,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 162 transitions, 1352 flow. Second operand has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 02:26:33,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:33,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 463 [2023-11-12 02:26:33,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand