./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/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_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:42:07,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:42:08,037 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:42:08,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:42:08,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:42:08,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:42:08,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:42:08,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:42:08,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:42:08,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:42:08,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:42:08,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:42:08,096 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:42:08,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:42:08,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:42:08,099 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:42:08,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:42:08,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:42:08,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:42:08,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:42:08,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:42:08,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:42:08,103 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:42:08,103 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:42:08,104 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:42:08,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:42:08,105 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:42:08,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:42:08,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:42:08,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:42:08,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:08,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:42:08,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:42:08,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:42:08,109 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:42:08,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:42:08,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:42:08,110 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:42:08,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:42:08,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:42:08,110 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:42:08,111 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_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2023-11-19 07:42:08,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:42:08,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:42:08,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:42:08,400 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:42:08,400 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:42:08,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2023-11-19 07:42:11,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:42:11,802 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:42:11,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2023-11-19 07:42:11,816 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/data/d11ab6ea6/f132f72a7aaa4d66950ebd26c54cf2f1/FLAG699cc8433 [2023-11-19 07:42:11,836 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/data/d11ab6ea6/f132f72a7aaa4d66950ebd26c54cf2f1 [2023-11-19 07:42:11,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:42:11,842 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:42:11,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:11,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:42:11,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:42:11,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:11" (1/1) ... [2023-11-19 07:42:11,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f84135c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:11, skipping insertion in model container [2023-11-19 07:42:11,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:11" (1/1) ... [2023-11-19 07:42:11,885 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:42:12,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:12,127 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:42:12,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:12,175 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:42:12,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12 WrapperNode [2023-11-19 07:42:12,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:12,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:12,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:42:12,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:42:12,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,237 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 213 [2023-11-19 07:42:12,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:12,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:42:12,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:42:12,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:42:12,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:42:12,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:42:12,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:42:12,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:42:12,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (1/1) ... [2023-11-19 07:42:12,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:12,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:12,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:42:12,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:42:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:42:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:42:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:42:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:42:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:42:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:42:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:42:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:42:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:42:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:42:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:42:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:42:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:42:12,372 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 07:42:12,487 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:42:12,489 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:42:13,047 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:42:13,064 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:42:13,065 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:42:13,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:13 BoogieIcfgContainer [2023-11-19 07:42:13,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:42:13,075 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:42:13,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:42:13,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:42:13,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:11" (1/3) ... [2023-11-19 07:42:13,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d51cabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:13, skipping insertion in model container [2023-11-19 07:42:13,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:12" (2/3) ... [2023-11-19 07:42:13,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d51cabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:13, skipping insertion in model container [2023-11-19 07:42:13,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:13" (3/3) ... [2023-11-19 07:42:13,084 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2023-11-19 07:42:13,094 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:42:13,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:42:13,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:42:13,118 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:42:13,274 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:42:13,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 277 transitions, 568 flow [2023-11-19 07:42:13,465 INFO L124 PetriNetUnfolderBase]: 24/275 cut-off events. [2023-11-19 07:42:13,466 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:42:13,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 275 events. 24/275 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 529 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-11-19 07:42:13,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 277 transitions, 568 flow [2023-11-19 07:42:13,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 66 transitions, 132 flow [2023-11-19 07:42:13,489 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:42:13,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 66 transitions, 132 flow [2023-11-19 07:42:13,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 66 transitions, 132 flow [2023-11-19 07:42:13,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions, 132 flow [2023-11-19 07:42:13,516 INFO L124 PetriNetUnfolderBase]: 4/66 cut-off events. [2023-11-19 07:42:13,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:13,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 66 events. 4/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-19 07:42:13,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-11-19 07:42:18,296 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-11-19 07:42:18,296 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-11-19 07:42:18,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:42:18,322 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;@6e24bd1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:42:18,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:42:18,325 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:42:18,326 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:42:18,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:18,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:18,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:42:18,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:42:18,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash 29814, now seen corresponding path program 1 times [2023-11-19 07:42:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:18,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232674026] [2023-11-19 07:42:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:18,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:18,616 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 07:42:18,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:18,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232674026] [2023-11-19 07:42:18,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232674026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:18,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:18,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:42:18,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564183387] [2023-11-19 07:42:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:18,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:18,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:18,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 360 [2023-11-19 07:42:18,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 07:42:18,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:18,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 360 [2023-11-19 07:42:18,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:18,726 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-19 07:42:18,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:18,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8 conditions, 3 events. 1/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-11-19 07:42:18,729 INFO L140 encePairwiseOnDemand]: 358/360 looper letters, 2 selfloop transitions, 1 changer transitions 0/3 dead transitions. [2023-11-19 07:42:18,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 3 transitions, 12 flow [2023-11-19 07:42:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:42:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 754 transitions. [2023-11-19 07:42:18,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981481481481482 [2023-11-19 07:42:18,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 754 transitions. [2023-11-19 07:42:18,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 754 transitions. [2023-11-19 07:42:18,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:18,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 754 transitions. [2023-11-19 07:42:18,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 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 07:42:18,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 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 07:42:18,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 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 07:42:18,797 INFO L175 Difference]: Start difference. First operand has 4 places, 4 transitions, 8 flow. Second operand 3 states and 754 transitions. [2023-11-19 07:42:18,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 3 transitions, 12 flow [2023-11-19 07:42:18,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 3 transitions, 12 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:42:18,802 INFO L231 Difference]: Finished difference. Result has 5 places, 3 transitions, 8 flow [2023-11-19 07:42:18,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=6, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=8, PETRI_PLACES=5, PETRI_TRANSITIONS=3} [2023-11-19 07:42:18,809 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 1 predicate places. [2023-11-19 07:42:18,809 INFO L495 AbstractCegarLoop]: Abstraction has has 5 places, 3 transitions, 8 flow [2023-11-19 07:42:18,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 07:42:18,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:18,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:42:18,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:42:18,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:42:18,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:18,813 INFO L85 PathProgramCache]: Analyzing trace with hash 29832, now seen corresponding path program 1 times [2023-11-19 07:42:18,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:18,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080892186] [2023-11-19 07:42:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:18,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:18,900 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 07:42:18,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:18,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080892186] [2023-11-19 07:42:18,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080892186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:18,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:18,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:42:18,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717681899] [2023-11-19 07:42:18,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:18,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:18,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:18,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:18,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:18,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 360 [2023-11-19 07:42:18,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 3 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 07:42:18,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:18,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 360 [2023-11-19 07:42:18,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:18,947 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-19 07:42:18,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:18,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 4 events. 1/4 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 6. Up to 4 conditions per place. [2023-11-19 07:42:18,949 INFO L140 encePairwiseOnDemand]: 357/360 looper letters, 2 selfloop transitions, 2 changer transitions 0/4 dead transitions. [2023-11-19 07:42:18,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 7 places, 4 transitions, 18 flow [2023-11-19 07:42:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:42:18,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 755 transitions. [2023-11-19 07:42:18,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6990740740740741 [2023-11-19 07:42:18,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 755 transitions. [2023-11-19 07:42:18,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 755 transitions. [2023-11-19 07:42:18,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:18,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 755 transitions. [2023-11-19 07:42:18,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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 07:42:18,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 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 07:42:18,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 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 07:42:18,969 INFO L175 Difference]: Start difference. First operand has 5 places, 3 transitions, 8 flow. Second operand 3 states and 755 transitions. [2023-11-19 07:42:18,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 7 places, 4 transitions, 18 flow [2023-11-19 07:42:18,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 4 transitions, 17 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:18,974 INFO L231 Difference]: Finished difference. Result has 7 places, 4 transitions, 19 flow [2023-11-19 07:42:18,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=7, PETRI_DIFFERENCE_MINUEND_PLACES=4, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=7, PETRI_TRANSITIONS=4} [2023-11-19 07:42:18,975 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 3 predicate places. [2023-11-19 07:42:18,976 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 4 transitions, 19 flow [2023-11-19 07:42:18,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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 07:42:18,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:18,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:42:18,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:42:18,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:42:18,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash 925887, now seen corresponding path program 1 times [2023-11-19 07:42:18,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:18,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374354678] [2023-11-19 07:42:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:19,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374354678] [2023-11-19 07:42:19,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374354678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:19,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787020028] [2023-11-19 07:42:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:19,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:19,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:19,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:19,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:42:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:19,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:42:19,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:19,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:19,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787020028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:19,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:19,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 07:42:19,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552398165] [2023-11-19 07:42:19,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:19,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:42:19,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:42:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:42:19,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 360 [2023-11-19 07:42:19,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 4 transitions, 19 flow. Second operand has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 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 07:42:19,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:19,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 360 [2023-11-19 07:42:19,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:19,428 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-11-19 07:42:19,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:19,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 7 events. 1/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 19. Up to 7 conditions per place. [2023-11-19 07:42:19,429 INFO L140 encePairwiseOnDemand]: 357/360 looper letters, 2 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-11-19 07:42:19,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 45 flow [2023-11-19 07:42:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:42:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:42:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1510 transitions. [2023-11-19 07:42:19,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6990740740740741 [2023-11-19 07:42:19,437 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1510 transitions. [2023-11-19 07:42:19,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1510 transitions. [2023-11-19 07:42:19,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:19,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1510 transitions. [2023-11-19 07:42:19,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 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 07:42:19,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 360.0) internal successors, (2520), 7 states have internal predecessors, (2520), 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 07:42:19,452 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 360.0) internal successors, (2520), 7 states have internal predecessors, (2520), 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 07:42:19,452 INFO L175 Difference]: Start difference. First operand has 7 places, 4 transitions, 19 flow. Second operand 6 states and 1510 transitions. [2023-11-19 07:42:19,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 45 flow [2023-11-19 07:42:19,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 41 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:19,454 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 51 flow [2023-11-19 07:42:19,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=51, PETRI_PLACES=14, PETRI_TRANSITIONS=7} [2023-11-19 07:42:19,456 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 10 predicate places. [2023-11-19 07:42:19,457 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 51 flow [2023-11-19 07:42:19,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 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 07:42:19,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:19,459 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:42:19,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:19,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:19,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:42:19,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1814383176, now seen corresponding path program 2 times [2023-11-19 07:42:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:19,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168708665] [2023-11-19 07:42:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:19,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:19,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:19,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168708665] [2023-11-19 07:42:19,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168708665] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:19,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709631188] [2023-11-19 07:42:19,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:42:19,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:19,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:19,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:19,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:42:19,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:42:19,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:42:19,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:42:19,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:42:19,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:42:19,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709631188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:19,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:19,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-11-19 07:42:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523669732] [2023-11-19 07:42:19,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:19,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:42:19,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:42:19,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:42:20,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 360 [2023-11-19 07:42:20,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 51 flow. Second operand has 9 states, 9 states have (on average 248.11111111111111) internal successors, (2233), 9 states have internal predecessors, (2233), 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 07:42:20,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:20,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 360 [2023-11-19 07:42:20,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:20,112 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-11-19 07:42:20,112 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:42:20,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 7 events. 1/7 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 26. Up to 7 conditions per place. [2023-11-19 07:42:20,113 INFO L140 encePairwiseOnDemand]: 357/360 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-11-19 07:42:20,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 7 transitions, 61 flow [2023-11-19 07:42:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:42:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:42:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1985 transitions. [2023-11-19 07:42:20,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6892361111111112 [2023-11-19 07:42:20,120 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1985 transitions. [2023-11-19 07:42:20,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1985 transitions. [2023-11-19 07:42:20,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:20,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1985 transitions. [2023-11-19 07:42:20,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 248.125) internal successors, (1985), 8 states have internal predecessors, (1985), 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 07:42:20,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 360.0) internal successors, (3240), 9 states have internal predecessors, (3240), 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 07:42:20,140 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 360.0) internal successors, (3240), 9 states have internal predecessors, (3240), 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 07:42:20,140 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 51 flow. Second operand 8 states and 1985 transitions. [2023-11-19 07:42:20,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 7 transitions, 61 flow [2023-11-19 07:42:20,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 35 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-19 07:42:20,142 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-11-19 07:42:20,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-11-19 07:42:20,143 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 11 predicate places. [2023-11-19 07:42:20,143 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-11-19 07:42:20,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 248.11111111111111) internal successors, (2233), 9 states have internal predecessors, (2233), 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 07:42:20,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-19 07:42:20,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-19 07:42:20,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-19 07:42:20,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-19 07:42:20,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:20,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:20,370 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-19 07:42:20,374 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:42:20,374 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:42:20,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:42:20 BasicIcfg [2023-11-19 07:42:20,379 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:42:20,379 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:42:20,380 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:42:20,380 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:42:20,380 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:13" (3/4) ... [2023-11-19 07:42:20,382 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:42:20,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:42:20,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:42:20,392 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-19 07:42:20,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:42:20,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:42:20,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:42:20,496 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:42:20,497 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:42:20,497 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:42:20,498 INFO L158 Benchmark]: Toolchain (without parser) took 8656.10ms. Allocated memory was 138.4MB in the beginning and 220.2MB in the end (delta: 81.8MB). Free memory was 77.3MB in the beginning and 76.9MB in the end (delta: 404.3kB). Peak memory consumption was 84.0MB. Max. memory is 16.1GB. [2023-11-19 07:42:20,498 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 138.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:42:20,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.73ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 77.3MB in the beginning and 151.7MB in the end (delta: -74.4MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2023-11-19 07:42:20,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.43ms. Allocated memory is still 182.5MB. Free memory was 151.7MB in the beginning and 153.0MB in the end (delta: -1.3MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2023-11-19 07:42:20,499 INFO L158 Benchmark]: Boogie Preprocessor took 45.20ms. Allocated memory is still 182.5MB. Free memory was 153.0MB in the beginning and 150.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:42:20,500 INFO L158 Benchmark]: RCFGBuilder took 787.65ms. Allocated memory is still 182.5MB. Free memory was 150.9MB in the beginning and 126.8MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 07:42:20,500 INFO L158 Benchmark]: TraceAbstraction took 7303.68ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 126.8MB in the beginning and 82.2MB in the end (delta: 44.6MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. [2023-11-19 07:42:20,501 INFO L158 Benchmark]: Witness Printer took 117.43ms. Allocated memory is still 220.2MB. Free memory was 82.2MB in the beginning and 76.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:42:20,503 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 138.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.73ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 77.3MB in the beginning and 151.7MB in the end (delta: -74.4MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.43ms. Allocated memory is still 182.5MB. Free memory was 151.7MB in the beginning and 153.0MB in the end (delta: -1.3MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.20ms. Allocated memory is still 182.5MB. Free memory was 153.0MB in the beginning and 150.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 787.65ms. Allocated memory is still 182.5MB. Free memory was 150.9MB in the beginning and 126.8MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7303.68ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 126.8MB in the beginning and 82.2MB in the end (delta: 44.6MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. * Witness Printer took 117.43ms. Allocated memory is still 220.2MB. Free memory was 82.2MB in the beginning and 76.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 63 PlacesBefore, 4 PlacesAfterwards, 66 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 8 FixpointIterations, 63 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 83 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 402 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: 7.1s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 2 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=3, InterpolantAutomatonStates: 20, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 3 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 12/33 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:42:20,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f852bf-48a3-4dc4-bb9a-76465c5258ca/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE