./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu --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 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:32:48,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:32:48,197 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:32:48,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:32:48,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:32:48,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:32:48,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:32:48,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:32:48,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:32:48,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:32:48,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:32:48,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:32:48,247 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:32:48,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:32:48,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:32:48,253 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:32:48,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:32:48,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:32:48,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:32:48,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:32:48,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:32:48,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:32:48,261 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:32:48,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:32:48,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:32:48,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:32:48,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:32:48,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:32:48,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:48,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:32:48,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:32:48,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:32:48,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:32:48,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:32:48,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:32:48,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:32:48,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:32:48,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:32:48,267 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:32:48,267 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_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 [2023-11-19 07:32:48,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:32:48,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:32:48,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:32:48,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:32:48,630 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:32:48,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2023-11-19 07:32:51,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:32:52,013 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:32:52,013 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2023-11-19 07:32:52,022 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/data/4a45d3916/14a9b6015ec244e2ac780e59ddfcfa14/FLAG79d667eda [2023-11-19 07:32:52,036 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/data/4a45d3916/14a9b6015ec244e2ac780e59ddfcfa14 [2023-11-19 07:32:52,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:32:52,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:32:52,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:52,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:32:52,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:32:52,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456deb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52, skipping insertion in model container [2023-11-19 07:32:52,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,077 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:32:52,266 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_d8a4b818-547d-4e28-b31b-c5b120b62bee/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[3070,3083] [2023-11-19 07:32:52,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:52,285 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:32:52,312 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_d8a4b818-547d-4e28-b31b-c5b120b62bee/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[3070,3083] [2023-11-19 07:32:52,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:52,325 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:32:52,326 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:32:52,333 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:32:52,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52 WrapperNode [2023-11-19 07:32:52,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:52,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:52,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:32:52,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:32:52,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,380 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2023-11-19 07:32:52,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:52,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:32:52,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:32:52,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:32:52,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,396 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:32:52,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:32:52,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:32:52,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:32:52,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (1/1) ... [2023-11-19 07:32:52,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:52,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:52,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:52,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:32:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:32:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:32:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:32:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:32:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:32:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:32:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:32:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:32:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:32:52,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:32:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:32:52,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:32:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:32:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:32:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:32:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:32:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:32:52,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:32:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:32:52,493 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:32:52,605 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:32:52,607 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:32:53,012 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:32:53,176 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:32:53,177 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:32:53,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:53 BoogieIcfgContainer [2023-11-19 07:32:53,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:32:53,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:32:53,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:32:53,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:32:53,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:32:52" (1/3) ... [2023-11-19 07:32:53,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ef8d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:53, skipping insertion in model container [2023-11-19 07:32:53,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:52" (2/3) ... [2023-11-19 07:32:53,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ef8d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:53, skipping insertion in model container [2023-11-19 07:32:53,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:53" (3/3) ... [2023-11-19 07:32:53,195 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2023-11-19 07:32:53,205 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:32:53,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:32:53,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:32:53,216 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:32:53,309 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:32:53,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 178 transitions, 384 flow [2023-11-19 07:32:53,451 INFO L124 PetriNetUnfolderBase]: 12/174 cut-off events. [2023-11-19 07:32:53,451 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:32:53,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 174 events. 12/174 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 144 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-11-19 07:32:53,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 178 transitions, 384 flow [2023-11-19 07:32:53,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 161 transitions, 346 flow [2023-11-19 07:32:53,473 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:32:53,483 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 161 transitions, 346 flow [2023-11-19 07:32:53,486 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 161 transitions, 346 flow [2023-11-19 07:32:53,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 161 transitions, 346 flow [2023-11-19 07:32:53,539 INFO L124 PetriNetUnfolderBase]: 12/161 cut-off events. [2023-11-19 07:32:53,540 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:32:53,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 161 events. 12/161 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-11-19 07:32:53,545 INFO L119 LiptonReduction]: Number of co-enabled transitions 2932 [2023-11-19 07:33:01,366 INFO L134 LiptonReduction]: Checked pairs total: 3990 [2023-11-19 07:33:01,366 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-19 07:33:01,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:01,388 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;@55f8c429, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:01,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:33:01,398 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:33:01,398 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2023-11-19 07:33:01,398 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:33:01,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:01,399 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] [2023-11-19 07:33:01,400 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)] === [2023-11-19 07:33:01,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2005083890, now seen corresponding path program 1 times [2023-11-19 07:33:01,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:01,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662514732] [2023-11-19 07:33:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:01,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:01,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:01,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662514732] [2023-11-19 07:33:01,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662514732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:01,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:01,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:01,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468086727] [2023-11-19 07:33:01,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:01,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:01,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:02,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 328 [2023-11-19 07:33:02,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:02,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:02,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 328 [2023-11-19 07:33:02,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:02,520 INFO L124 PetriNetUnfolderBase]: 1312/1790 cut-off events. [2023-11-19 07:33:02,521 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-19 07:33:02,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3791 conditions, 1790 events. 1312/1790 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5905 event pairs, 787 based on Foata normal form. 0/1455 useless extension candidates. Maximal degree in co-relation 3330. Up to 1474 conditions per place. [2023-11-19 07:33:02,539 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-19 07:33:02,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 221 flow [2023-11-19 07:33:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:33:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:33:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 648 transitions. [2023-11-19 07:33:02,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49390243902439024 [2023-11-19 07:33:02,560 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 648 transitions. [2023-11-19 07:33:02,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 648 transitions. [2023-11-19 07:33:02,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:02,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 648 transitions. [2023-11-19 07:33:02,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:02,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:02,581 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:02,583 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 86 flow. Second operand 4 states and 648 transitions. [2023-11-19 07:33:02,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 221 flow [2023-11-19 07:33:02,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 199 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-19 07:33:02,593 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 84 flow [2023-11-19 07:33:02,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-11-19 07:33:02,599 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-11-19 07:33:02,600 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 84 flow [2023-11-19 07:33:02,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:02,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:02,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:02,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:33:02,602 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)] === [2023-11-19 07:33:02,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:02,603 INFO L85 PathProgramCache]: Analyzing trace with hash 234024453, now seen corresponding path program 1 times [2023-11-19 07:33:02,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:02,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623500480] [2023-11-19 07:33:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:02,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:02,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623500480] [2023-11-19 07:33:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623500480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:02,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:02,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:02,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875924675] [2023-11-19 07:33:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:02,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:02,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:02,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:02,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 328 [2023-11-19 07:33:02,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:02,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:02,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 328 [2023-11-19 07:33:02,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:03,199 INFO L124 PetriNetUnfolderBase]: 1632/2222 cut-off events. [2023-11-19 07:33:03,200 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2023-11-19 07:33:03,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5065 conditions, 2222 events. 1632/2222 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7613 event pairs, 977 based on Foata normal form. 0/1833 useless extension candidates. Maximal degree in co-relation 1796. Up to 1790 conditions per place. [2023-11-19 07:33:03,216 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-11-19 07:33:03,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 229 flow [2023-11-19 07:33:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:33:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:33:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 648 transitions. [2023-11-19 07:33:03,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49390243902439024 [2023-11-19 07:33:03,223 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 648 transitions. [2023-11-19 07:33:03,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 648 transitions. [2023-11-19 07:33:03,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:03,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 648 transitions. [2023-11-19 07:33:03,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,235 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,236 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 84 flow. Second operand 4 states and 648 transitions. [2023-11-19 07:33:03,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 229 flow [2023-11-19 07:33:03,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 219 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:33:03,246 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 92 flow [2023-11-19 07:33:03,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-19 07:33:03,248 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-11-19 07:33:03,249 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 92 flow [2023-11-19 07:33:03,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:03,250 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] [2023-11-19 07:33:03,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:33:03,250 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)] === [2023-11-19 07:33:03,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2104391719, now seen corresponding path program 1 times [2023-11-19 07:33:03,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:03,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039317954] [2023-11-19 07:33:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:03,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:03,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:03,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039317954] [2023-11-19 07:33:03,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039317954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:03,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:03,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:03,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678901371] [2023-11-19 07:33:03,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:03,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:03,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:03,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:03,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:03,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 328 [2023-11-19 07:33:03,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:03,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 328 [2023-11-19 07:33:03,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:03,921 INFO L124 PetriNetUnfolderBase]: 2138/2902 cut-off events. [2023-11-19 07:33:03,921 INFO L125 PetriNetUnfolderBase]: For 984/984 co-relation queries the response was YES. [2023-11-19 07:33:03,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7067 conditions, 2902 events. 2138/2902 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10518 event pairs, 1243 based on Foata normal form. 0/2449 useless extension candidates. Maximal degree in co-relation 2239. Up to 2222 conditions per place. [2023-11-19 07:33:03,942 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 49 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-11-19 07:33:03,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 253 flow [2023-11-19 07:33:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:33:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:33:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 649 transitions. [2023-11-19 07:33:03,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946646341463415 [2023-11-19 07:33:03,946 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 649 transitions. [2023-11-19 07:33:03,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 649 transitions. [2023-11-19 07:33:03,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:03,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 649 transitions. [2023-11-19 07:33:03,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,954 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,954 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 92 flow. Second operand 4 states and 649 transitions. [2023-11-19 07:33:03,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 253 flow [2023-11-19 07:33:03,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 243 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:33:03,960 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 100 flow [2023-11-19 07:33:03,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-11-19 07:33:03,962 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-11-19 07:33:03,965 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 100 flow [2023-11-19 07:33:03,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:03,967 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] [2023-11-19 07:33:03,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:33:03,967 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)] === [2023-11-19 07:33:03,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:03,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1009909101, now seen corresponding path program 1 times [2023-11-19 07:33:03,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:03,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750466592] [2023-11-19 07:33:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:03,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:33:04,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:04,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750466592] [2023-11-19 07:33:04,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750466592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:04,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:04,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:04,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812830265] [2023-11-19 07:33:04,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:04,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:04,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:04,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:04,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:04,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 328 [2023-11-19 07:33:04,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:04,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:04,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 328 [2023-11-19 07:33:04,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:04,551 INFO L124 PetriNetUnfolderBase]: 2138/2903 cut-off events. [2023-11-19 07:33:04,552 INFO L125 PetriNetUnfolderBase]: For 1286/1286 co-relation queries the response was YES. [2023-11-19 07:33:04,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7648 conditions, 2903 events. 2138/2903 cut-off events. For 1286/1286 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10165 event pairs, 1685 based on Foata normal form. 0/2450 useless extension candidates. Maximal degree in co-relation 2581. Up to 2903 conditions per place. [2023-11-19 07:33:04,574 INFO L140 encePairwiseOnDemand]: 325/328 looper letters, 33 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-19 07:33:04,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 172 flow [2023-11-19 07:33:04,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:33:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-11-19 07:33:04,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49085365853658536 [2023-11-19 07:33:04,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-11-19 07:33:04,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-11-19 07:33:04,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:04,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-11-19 07:33:04,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:04,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:04,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:04,583 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 100 flow. Second operand 3 states and 483 transitions. [2023-11-19 07:33:04,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 172 flow [2023-11-19 07:33:04,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 166 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:33:04,588 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 106 flow [2023-11-19 07:33:04,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-11-19 07:33:04,589 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-11-19 07:33:04,589 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 106 flow [2023-11-19 07:33:04,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:04,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:04,590 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] [2023-11-19 07:33:04,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:33:04,590 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)] === [2023-11-19 07:33:04,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:04,591 INFO L85 PathProgramCache]: Analyzing trace with hash -302998196, now seen corresponding path program 1 times [2023-11-19 07:33:04,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:04,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020395755] [2023-11-19 07:33:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:04,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:33:05,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:05,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020395755] [2023-11-19 07:33:05,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020395755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:05,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156032515] [2023-11-19 07:33:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:05,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:05,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:05,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:05,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:33:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:05,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:33:05,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:05,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 07:33:05,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 37 [2023-11-19 07:33:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:05,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:06,014 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-19 07:33:06,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 58 [2023-11-19 07:33:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:06,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156032515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:33:06,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:33:06,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 17 [2023-11-19 07:33:06,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376537831] [2023-11-19 07:33:06,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:06,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:33:06,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:06,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:33:06,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:33:06,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 328 [2023-11-19 07:33:06,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 106 flow. Second operand has 18 states, 18 states have (on average 143.27777777777777) internal successors, (2579), 18 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:06,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:06,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 328 [2023-11-19 07:33:06,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:11,592 INFO L124 PetriNetUnfolderBase]: 15272/20971 cut-off events. [2023-11-19 07:33:11,593 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-11-19 07:33:11,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53924 conditions, 20971 events. 15272/20971 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 112621 event pairs, 849 based on Foata normal form. 10/16888 useless extension candidates. Maximal degree in co-relation 53910. Up to 4185 conditions per place. [2023-11-19 07:33:11,706 INFO L140 encePairwiseOnDemand]: 315/328 looper letters, 265 selfloop transitions, 96 changer transitions 462/823 dead transitions. [2023-11-19 07:33:11,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 823 transitions, 4132 flow [2023-11-19 07:33:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-19 07:33:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-11-19 07:33:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 8694 transitions. [2023-11-19 07:33:11,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46501925545571243 [2023-11-19 07:33:11,739 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 8694 transitions. [2023-11-19 07:33:11,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 8694 transitions. [2023-11-19 07:33:11,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:11,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 8694 transitions. [2023-11-19 07:33:11,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 152.52631578947367) internal successors, (8694), 57 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:11,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 328.0) internal successors, (19024), 58 states have internal predecessors, (19024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:11,922 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 328.0) internal successors, (19024), 58 states have internal predecessors, (19024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:11,922 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 106 flow. Second operand 57 states and 8694 transitions. [2023-11-19 07:33:11,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 823 transitions, 4132 flow [2023-11-19 07:33:12,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 823 transitions, 4128 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:33:12,060 INFO L231 Difference]: Finished difference. Result has 138 places, 150 transitions, 943 flow [2023-11-19 07:33:12,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=943, PETRI_PLACES=138, PETRI_TRANSITIONS=150} [2023-11-19 07:33:12,061 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 98 predicate places. [2023-11-19 07:33:12,061 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 150 transitions, 943 flow [2023-11-19 07:33:12,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 143.27777777777777) internal successors, (2579), 18 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:12,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:12,063 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] [2023-11-19 07:33:12,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:12,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:12,276 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)] === [2023-11-19 07:33:12,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash -869397580, now seen corresponding path program 2 times [2023-11-19 07:33:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:12,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472291622] [2023-11-19 07:33:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:33:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:12,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472291622] [2023-11-19 07:33:12,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472291622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:12,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:12,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:12,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273095590] [2023-11-19 07:33:12,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:12,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:12,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:12,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:12,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 328 [2023-11-19 07:33:12,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 150 transitions, 943 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:12,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:12,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 328 [2023-11-19 07:33:12,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:15,878 INFO L124 PetriNetUnfolderBase]: 10906/15241 cut-off events. [2023-11-19 07:33:15,879 INFO L125 PetriNetUnfolderBase]: For 434227/434227 co-relation queries the response was YES. [2023-11-19 07:33:15,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91788 conditions, 15241 events. 10906/15241 cut-off events. For 434227/434227 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 79778 event pairs, 1419 based on Foata normal form. 8/15248 useless extension candidates. Maximal degree in co-relation 91727. Up to 9033 conditions per place. [2023-11-19 07:33:16,128 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 144 selfloop transitions, 7 changer transitions 198/349 dead transitions. [2023-11-19 07:33:16,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 349 transitions, 2960 flow [2023-11-19 07:33:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:33:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 836 transitions. [2023-11-19 07:33:16,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097560975609756 [2023-11-19 07:33:16,132 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 836 transitions. [2023-11-19 07:33:16,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 836 transitions. [2023-11-19 07:33:16,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:16,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 836 transitions. [2023-11-19 07:33:16,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:16,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:16,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:16,140 INFO L175 Difference]: Start difference. First operand has 138 places, 150 transitions, 943 flow. Second operand 5 states and 836 transitions. [2023-11-19 07:33:16,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 349 transitions, 2960 flow [2023-11-19 07:33:20,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 349 transitions, 2724 flow, removed 84 selfloop flow, removed 23 redundant places. [2023-11-19 07:33:20,450 INFO L231 Difference]: Finished difference. Result has 90 places, 114 transitions, 630 flow [2023-11-19 07:33:20,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=630, PETRI_PLACES=90, PETRI_TRANSITIONS=114} [2023-11-19 07:33:20,451 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 50 predicate places. [2023-11-19 07:33:20,452 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 114 transitions, 630 flow [2023-11-19 07:33:20,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:20,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:20,452 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] [2023-11-19 07:33:20,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:33:20,453 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)] === [2023-11-19 07:33:20,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1671521644, now seen corresponding path program 3 times [2023-11-19 07:33:20,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:20,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445921924] [2023-11-19 07:33:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:20,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:33:21,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:21,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445921924] [2023-11-19 07:33:21,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445921924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:21,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444143009] [2023-11-19 07:33:21,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:33:21,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:21,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:21,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:21,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8a4b818-547d-4e28-b31b-c5b120b62bee/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:33:21,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:33:21,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:33:21,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:33:21,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:21,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:33:21,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:33:21,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:33:21,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 07:33:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:21,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:22,175 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_187 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_187) c_~A~0.base) c_~A~0.offset))) (or (< 2147483646 .cse0) (< c_~min~0 (+ 2 .cse0))))) is different from false [2023-11-19 07:33:32,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:33:32,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2023-11-19 07:33:32,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 90 [2023-11-19 07:33:32,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-19 07:33:32,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2023-11-19 07:33:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-19 07:33:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444143009] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:33:32,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:33:32,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 28 [2023-11-19 07:33:32,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112182630] [2023-11-19 07:33:32,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:32,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-19 07:33:32,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-19 07:33:32,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=663, Unknown=11, NotChecked=54, Total=870 [2023-11-19 07:33:32,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 328 [2023-11-19 07:33:32,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 114 transitions, 630 flow. Second operand has 30 states, 30 states have (on average 113.9) internal successors, (3417), 30 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:32,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:32,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 328 [2023-11-19 07:33:32,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand