./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe026_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/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_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe026_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/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_b7208db8-b207-413a-b950-ab1c292b5e02/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 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:29,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:29,943 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:56:29,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:29,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:29,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:29,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:29,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:29,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:29,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:29,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:29,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:29,987 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:29,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:29,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:29,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:29,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:29,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:29,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:29,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:29,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:29,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:29,993 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:29,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:29,994 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:29,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:29,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:29,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:29,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:29,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:29,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:29,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:29,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:29,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:29,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:29,999 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:30,000 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:30,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:30,000 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:30,001 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_b7208db8-b207-413a-b950-ab1c292b5e02/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d [2023-11-19 07:56:30,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:30,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:30,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:30,368 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:30,369 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:30,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe026_tso.i [2023-11-19 07:56:33,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:34,030 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:34,031 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/sv-benchmarks/c/pthread-wmm/safe026_tso.i [2023-11-19 07:56:34,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/data/7ef739cfd/41feacb4dd9e4906b0d1b83a079d416e/FLAG712cdd342 [2023-11-19 07:56:34,064 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/data/7ef739cfd/41feacb4dd9e4906b0d1b83a079d416e [2023-11-19 07:56:34,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:34,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:34,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:34,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:34,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:34,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2993e654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34, skipping insertion in model container [2023-11-19 07:56:34,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:34,355 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_b7208db8-b207-413a-b950-ab1c292b5e02/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2023-11-19 07:56:34,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:34,607 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:34,619 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_b7208db8-b207-413a-b950-ab1c292b5e02/sv-benchmarks/c/pthread-wmm/safe026_tso.i[945,958] [2023-11-19 07:56:34,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:34,685 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:34,685 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:34,694 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:34,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34 WrapperNode [2023-11-19 07:56:34,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:34,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:34,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:34,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:34,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,780 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-19 07:56:34,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:34,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:34,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:34,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:34,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:34,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:34,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:34,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:34,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (1/1) ... [2023-11-19 07:56:34,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:34,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:34,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:34,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:56:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:56:34,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:56:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:56:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:56:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:56:34,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:56:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:56:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:34,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:34,900 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 07:56:35,042 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:35,045 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:35,213 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:35,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:35,223 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:56:35,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:35 BoogieIcfgContainer [2023-11-19 07:56:35,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:35,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:35,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:35,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:35,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:34" (1/3) ... [2023-11-19 07:56:35,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35411cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:35, skipping insertion in model container [2023-11-19 07:56:35,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:34" (2/3) ... [2023-11-19 07:56:35,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35411cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:35, skipping insertion in model container [2023-11-19 07:56:35,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:35" (3/3) ... [2023-11-19 07:56:35,237 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2023-11-19 07:56:35,247 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:56:35,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:35,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:56:35,260 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:35,361 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:56:35,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 192 flow [2023-11-19 07:56:35,474 INFO L124 PetriNetUnfolderBase]: 2/87 cut-off events. [2023-11-19 07:56:35,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:35,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-11-19 07:56:35,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 192 flow [2023-11-19 07:56:35,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 72 transitions, 153 flow [2023-11-19 07:56:35,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:35,501 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 72 transitions, 153 flow [2023-11-19 07:56:35,512 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 72 transitions, 153 flow [2023-11-19 07:56:35,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 72 transitions, 153 flow [2023-11-19 07:56:35,576 INFO L124 PetriNetUnfolderBase]: 1/72 cut-off events. [2023-11-19 07:56:35,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:35,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 1/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-11-19 07:56:35,579 INFO L119 LiptonReduction]: Number of co-enabled transitions 1266 [2023-11-19 07:56:37,952 INFO L134 LiptonReduction]: Checked pairs total: 1743 [2023-11-19 07:56:37,953 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-19 07:56:37,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:37,987 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;@1c01b22e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:37,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:56:37,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:37,999 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-19 07:56:37,999 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:38,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:38,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:38,004 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 1 more)] === [2023-11-19 07:56:38,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1594934489, now seen corresponding path program 1 times [2023-11-19 07:56:38,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:38,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578875949] [2023-11-19 07:56:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:38,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:38,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:38,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578875949] [2023-11-19 07:56:38,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578875949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:38,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:38,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:38,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959947491] [2023-11-19 07:56:38,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:38,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:38,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:38,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2023-11-19 07:56:38,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 07:56:38,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:38,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2023-11-19 07:56:38,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:38,985 INFO L124 PetriNetUnfolderBase]: 381/628 cut-off events. [2023-11-19 07:56:38,987 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 07:56:38,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 628 events. 381/628 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2522 event pairs, 117 based on Foata normal form. 26/654 useless extension candidates. Maximal degree in co-relation 1292. Up to 439 conditions per place. [2023-11-19 07:56:39,001 INFO L140 encePairwiseOnDemand]: 145/152 looper letters, 22 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2023-11-19 07:56:39,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 120 flow [2023-11-19 07:56:39,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-19 07:56:39,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2023-11-19 07:56:39,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-19 07:56:39,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-19 07:56:39,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:39,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-19 07:56:39,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:39,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 07:56:39,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 07:56:39,040 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 261 transitions. [2023-11-19 07:56:39,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 120 flow [2023-11-19 07:56:39,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:56:39,045 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 76 flow [2023-11-19 07:56:39,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-19 07:56:39,052 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-11-19 07:56:39,052 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 76 flow [2023-11-19 07:56:39,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 07:56:39,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:39,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:39,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:39,054 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 1 more)] === [2023-11-19 07:56:39,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2096638744, now seen corresponding path program 1 times [2023-11-19 07:56:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:39,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735814417] [2023-11-19 07:56:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:39,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:39,228 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 07:56:39,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:39,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735814417] [2023-11-19 07:56:39,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735814417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:39,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:39,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:39,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572440531] [2023-11-19 07:56:39,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:39,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:39,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:39,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 152 [2023-11-19 07:56:39,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:39,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:39,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 152 [2023-11-19 07:56:39,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:39,397 INFO L124 PetriNetUnfolderBase]: 359/594 cut-off events. [2023-11-19 07:56:39,398 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-11-19 07:56:39,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 594 events. 359/594 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2274 event pairs, 117 based on Foata normal form. 8/602 useless extension candidates. Maximal degree in co-relation 1560. Up to 447 conditions per place. [2023-11-19 07:56:39,406 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 23 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-11-19 07:56:39,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 148 flow [2023-11-19 07:56:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-11-19 07:56:39,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5899122807017544 [2023-11-19 07:56:39,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-11-19 07:56:39,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-11-19 07:56:39,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:39,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-11-19 07:56:39,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 07:56:39,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 07:56:39,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 07:56:39,428 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 76 flow. Second operand 3 states and 269 transitions. [2023-11-19 07:56:39,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 148 flow [2023-11-19 07:56:39,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:39,436 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 77 flow [2023-11-19 07:56:39,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-11-19 07:56:39,437 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-11-19 07:56:39,442 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 77 flow [2023-11-19 07:56:39,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:39,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:39,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:39,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:39,444 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 1 more)] === [2023-11-19 07:56:39,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2096639767, now seen corresponding path program 1 times [2023-11-19 07:56:39,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:39,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149259676] [2023-11-19 07:56:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:39,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:39,596 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 07:56:39,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:39,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149259676] [2023-11-19 07:56:39,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149259676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:39,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:39,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:39,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109042581] [2023-11-19 07:56:39,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:39,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:39,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:39,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2023-11-19 07:56:39,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 07:56:39,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:39,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2023-11-19 07:56:39,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:39,757 INFO L124 PetriNetUnfolderBase]: 336/559 cut-off events. [2023-11-19 07:56:39,757 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-19 07:56:39,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 559 events. 336/559 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2195 event pairs, 73 based on Foata normal form. 6/565 useless extension candidates. Maximal degree in co-relation 1456. Up to 360 conditions per place. [2023-11-19 07:56:39,762 INFO L140 encePairwiseOnDemand]: 146/152 looper letters, 29 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2023-11-19 07:56:39,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 208 flow [2023-11-19 07:56:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2023-11-19 07:56:39,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674342105263158 [2023-11-19 07:56:39,765 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 345 transitions. [2023-11-19 07:56:39,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 345 transitions. [2023-11-19 07:56:39,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:39,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 345 transitions. [2023-11-19 07:56:39,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 07:56:39,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 07:56:39,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 07:56:39,771 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 77 flow. Second operand 4 states and 345 transitions. [2023-11-19 07:56:39,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 208 flow [2023-11-19 07:56:39,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:39,774 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 123 flow [2023-11-19 07:56:39,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-11-19 07:56:39,775 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-11-19 07:56:39,776 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 123 flow [2023-11-19 07:56:39,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 07:56:39,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:39,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:39,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:39,777 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 1 more)] === [2023-11-19 07:56:39,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash -571292998, now seen corresponding path program 1 times [2023-11-19 07:56:39,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:39,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426213941] [2023-11-19 07:56:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:39,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:39,889 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 07:56:39,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:39,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426213941] [2023-11-19 07:56:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426213941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:39,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:39,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:39,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118198975] [2023-11-19 07:56:39,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:39,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:39,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 152 [2023-11-19 07:56:39,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 07:56:39,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:39,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 152 [2023-11-19 07:56:39,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:39,986 INFO L124 PetriNetUnfolderBase]: 237/425 cut-off events. [2023-11-19 07:56:39,986 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2023-11-19 07:56:39,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 425 events. 237/425 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1645 event pairs, 54 based on Foata normal form. 23/448 useless extension candidates. Maximal degree in co-relation 1274. Up to 348 conditions per place. [2023-11-19 07:56:39,991 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-11-19 07:56:39,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 284 flow [2023-11-19 07:56:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-11-19 07:56:39,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5899122807017544 [2023-11-19 07:56:39,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-11-19 07:56:39,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-11-19 07:56:39,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:39,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-11-19 07:56:39,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 07:56:39,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 07:56:39,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 07:56:39,998 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 123 flow. Second operand 3 states and 269 transitions. [2023-11-19 07:56:39,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 284 flow [2023-11-19 07:56:40,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:40,002 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 149 flow [2023-11-19 07:56:40,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-11-19 07:56:40,003 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-19 07:56:40,003 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 149 flow [2023-11-19 07:56:40,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 07:56:40,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:40,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:40,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:56:40,005 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 1 more)] === [2023-11-19 07:56:40,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash 619543066, now seen corresponding path program 1 times [2023-11-19 07:56:40,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:40,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097911146] [2023-11-19 07:56:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:40,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:40,115 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 07:56:40,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:40,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097911146] [2023-11-19 07:56:40,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097911146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:40,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:40,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531411102] [2023-11-19 07:56:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:40,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:40,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 152 [2023-11-19 07:56:40,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 07:56:40,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:40,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 152 [2023-11-19 07:56:40,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:40,214 INFO L124 PetriNetUnfolderBase]: 144/281 cut-off events. [2023-11-19 07:56:40,214 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2023-11-19 07:56:40,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 281 events. 144/281 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1026 event pairs, 26 based on Foata normal form. 31/312 useless extension candidates. Maximal degree in co-relation 1014. Up to 116 conditions per place. [2023-11-19 07:56:40,218 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 47 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2023-11-19 07:56:40,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 394 flow [2023-11-19 07:56:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:40,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2023-11-19 07:56:40,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904605263157895 [2023-11-19 07:56:40,220 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2023-11-19 07:56:40,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2023-11-19 07:56:40,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:40,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2023-11-19 07:56:40,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 07:56:40,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 07:56:40,225 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 07:56:40,225 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 149 flow. Second operand 4 states and 359 transitions. [2023-11-19 07:56:40,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 394 flow [2023-11-19 07:56:40,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:56:40,230 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 185 flow [2023-11-19 07:56:40,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-11-19 07:56:40,231 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-11-19 07:56:40,231 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 185 flow [2023-11-19 07:56:40,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 07:56:40,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:40,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:40,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:56:40,232 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 1 more)] === [2023-11-19 07:56:40,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1655064402, now seen corresponding path program 1 times [2023-11-19 07:56:40,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:40,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195463977] [2023-11-19 07:56:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:40,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:40,399 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 07:56:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195463977] [2023-11-19 07:56:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195463977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:40,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:40,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:40,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151334167] [2023-11-19 07:56:40,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:40,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:40,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:40,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:40,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 152 [2023-11-19 07:56:40,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 07:56:40,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:40,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 152 [2023-11-19 07:56:40,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:40,535 INFO L124 PetriNetUnfolderBase]: 124/238 cut-off events. [2023-11-19 07:56:40,535 INFO L125 PetriNetUnfolderBase]: For 409/409 co-relation queries the response was YES. [2023-11-19 07:56:40,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 238 events. 124/238 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 837 event pairs, 23 based on Foata normal form. 14/252 useless extension candidates. Maximal degree in co-relation 941. Up to 103 conditions per place. [2023-11-19 07:56:40,538 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 41 selfloop transitions, 10 changer transitions 3/54 dead transitions. [2023-11-19 07:56:40,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 418 flow [2023-11-19 07:56:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:56:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:56:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2023-11-19 07:56:40,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5776315789473684 [2023-11-19 07:56:40,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2023-11-19 07:56:40,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2023-11-19 07:56:40,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:40,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2023-11-19 07:56:40,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:40,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 07:56:40,549 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 07:56:40,549 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 185 flow. Second operand 5 states and 439 transitions. [2023-11-19 07:56:40,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 418 flow [2023-11-19 07:56:40,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 392 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-19 07:56:40,555 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 191 flow [2023-11-19 07:56:40,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-11-19 07:56:40,558 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2023-11-19 07:56:40,559 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 191 flow [2023-11-19 07:56:40,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 07:56:40,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:40,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:40,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:56:40,561 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 1 more)] === [2023-11-19 07:56:40,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1401791467, now seen corresponding path program 1 times [2023-11-19 07:56:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:40,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359840691] [2023-11-19 07:56:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:40,724 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 07:56:40,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:40,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359840691] [2023-11-19 07:56:40,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359840691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:40,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:40,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:40,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979007878] [2023-11-19 07:56:40,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:40,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:40,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:40,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:40,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 152 [2023-11-19 07:56:40,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:40,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:40,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 152 [2023-11-19 07:56:40,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:40,841 INFO L124 PetriNetUnfolderBase]: 143/285 cut-off events. [2023-11-19 07:56:40,842 INFO L125 PetriNetUnfolderBase]: For 623/623 co-relation queries the response was YES. [2023-11-19 07:56:40,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 285 events. 143/285 cut-off events. For 623/623 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1107 event pairs, 18 based on Foata normal form. 1/286 useless extension candidates. Maximal degree in co-relation 1169. Up to 184 conditions per place. [2023-11-19 07:56:40,845 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 22 selfloop transitions, 1 changer transitions 35/58 dead transitions. [2023-11-19 07:56:40,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 492 flow [2023-11-19 07:56:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2023-11-19 07:56:40,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2023-11-19 07:56:40,853 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2023-11-19 07:56:40,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2023-11-19 07:56:40,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:40,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2023-11-19 07:56:40,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:40,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 07:56:40,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 07:56:40,858 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 191 flow. Second operand 4 states and 352 transitions. [2023-11-19 07:56:40,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 492 flow [2023-11-19 07:56:40,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 58 transitions, 436 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-19 07:56:40,865 INFO L231 Difference]: Finished difference. Result has 41 places, 22 transitions, 119 flow [2023-11-19 07:56:40,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=41, PETRI_TRANSITIONS=22} [2023-11-19 07:56:40,867 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-11-19 07:56:40,868 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 22 transitions, 119 flow [2023-11-19 07:56:40,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:40,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:40,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:40,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:56:40,871 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 1 more)] === [2023-11-19 07:56:40,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1533533883, now seen corresponding path program 2 times [2023-11-19 07:56:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:40,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689892133] [2023-11-19 07:56:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:40,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:41,067 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 07:56:41,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:41,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689892133] [2023-11-19 07:56:41,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689892133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:41,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:41,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:41,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144658260] [2023-11-19 07:56:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:41,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:41,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:41,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:41,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 152 [2023-11-19 07:56:41,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 22 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 07:56:41,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:41,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 152 [2023-11-19 07:56:41,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:41,142 INFO L124 PetriNetUnfolderBase]: 18/54 cut-off events. [2023-11-19 07:56:41,143 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 07:56:41,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 54 events. 18/54 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 103 event pairs, 9 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 208. Up to 31 conditions per place. [2023-11-19 07:56:41,143 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-11-19 07:56:41,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 22 transitions, 163 flow [2023-11-19 07:56:41,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:56:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-11-19 07:56:41,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345394736842105 [2023-11-19 07:56:41,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-11-19 07:56:41,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-11-19 07:56:41,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:41,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-11-19 07:56:41,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 07:56:41,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 07:56:41,150 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 07:56:41,150 INFO L175 Difference]: Start difference. First operand has 41 places, 22 transitions, 119 flow. Second operand 4 states and 325 transitions. [2023-11-19 07:56:41,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 22 transitions, 163 flow [2023-11-19 07:56:41,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 146 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-19 07:56:41,153 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-11-19 07:56:41,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-11-19 07:56:41,156 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-11-19 07:56:41,157 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-11-19 07:56:41,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 07:56:41,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-19 07:56:41,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-19 07:56:41,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 07:56:41,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-19 07:56:41,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:56:41,162 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:41,165 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:56:41,166 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:56:41,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:56:41 BasicIcfg [2023-11-19 07:56:41,179 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:56:41,179 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:56:41,179 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:56:41,180 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:56:41,180 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:35" (3/4) ... [2023-11-19 07:56:41,183 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:56:41,187 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 07:56:41,188 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 07:56:41,188 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-19 07:56:41,195 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-19 07:56:41,195 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:56:41,195 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 07:56:41,196 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:56:41,296 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:56:41,296 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:56:41,296 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:56:41,297 INFO L158 Benchmark]: Toolchain (without parser) took 7228.61ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 110.2MB in the beginning and 125.7MB in the end (delta: -15.5MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2023-11-19 07:56:41,297 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 113.2MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:56:41,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 624.98ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 89.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:56:41,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.54ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 87.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:41,299 INFO L158 Benchmark]: Boogie Preprocessor took 29.78ms. Allocated memory is still 142.6MB. Free memory was 87.6MB in the beginning and 86.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:41,299 INFO L158 Benchmark]: RCFGBuilder took 403.45ms. Allocated memory is still 142.6MB. Free memory was 86.0MB in the beginning and 72.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:56:41,300 INFO L158 Benchmark]: TraceAbstraction took 5948.72ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 71.8MB in the beginning and 129.9MB in the end (delta: -58.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:56:41,300 INFO L158 Benchmark]: Witness Printer took 117.21ms. Allocated memory is still 182.5MB. Free memory was 129.9MB in the beginning and 125.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:56:41,302 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 113.2MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 624.98ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 89.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.54ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 87.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.78ms. Allocated memory is still 142.6MB. Free memory was 87.6MB in the beginning and 86.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 403.45ms. Allocated memory is still 142.6MB. Free memory was 86.0MB in the beginning and 72.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5948.72ms. Allocated memory was 142.6MB in the beginning and 182.5MB in the end (delta: 39.8MB). Free memory was 71.8MB in the beginning and 129.9MB in the end (delta: -58.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 117.21ms. Allocated memory is still 182.5MB. Free memory was 129.9MB in the beginning and 125.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 81 PlacesBefore, 26 PlacesAfterwards, 72 TransitionsBefore, 17 TransitionsAfterwards, 1266 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 62 TotalNumberOfCompositions, 1743 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1069, independent: 1008, independent conditional: 0, independent unconditional: 1008, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 698, independent: 672, independent conditional: 0, independent unconditional: 672, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1069, independent: 336, independent conditional: 0, independent unconditional: 336, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 698, unknown conditional: 0, unknown unconditional: 698] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 378 IncrementalHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 24 mSDtfsCounter, 378 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=6, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:56:41,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7208db8-b207-413a-b950-ab1c292b5e02/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE