./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya --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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:51:25,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:51:25,942 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:51:25,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:51:25,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:51:25,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:51:25,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:51:25,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:51:25,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:51:25,974 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:51:25,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:51:25,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:51:25,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:51:25,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:51:25,977 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:51:25,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:51:25,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:51:25,978 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:51:25,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:51:25,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:51:25,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:51:25,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:51:25,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:51:25,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:51:25,982 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:51:25,982 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:51:25,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:51:25,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:51:25,983 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:51:25,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:51:25,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:51:25,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:51:25,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:51:25,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:51:25,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:51:25,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:51:25,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:51:25,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:51:25,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:51:25,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:51:25,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:51:25,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:51:25,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:51:25,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:51:25,988 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_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2023-11-29 04:51:26,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:51:26,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:51:26,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:51:26,224 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:51:26,225 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:51:26,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-11-29 04:51:28,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:51:29,230 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:51:29,231 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-11-29 04:51:29,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/data/258bceb68/dd8987b846004286bac9752ef79ed8d0/FLAG99c9d4582 [2023-11-29 04:51:29,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/data/258bceb68/dd8987b846004286bac9752ef79ed8d0 [2023-11-29 04:51:29,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:51:29,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:51:29,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:51:29,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:51:29,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:51:29,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b064dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29, skipping insertion in model container [2023-11-29 04:51:29,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,317 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:51:29,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:51:29,644 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:51:29,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:51:29,725 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:51:29,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29 WrapperNode [2023-11-29 04:51:29,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:51:29,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:51:29,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:51:29,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:51:29,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,772 INFO L138 Inliner]: procedures = 173, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 133 [2023-11-29 04:51:29,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:51:29,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:51:29,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:51:29,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:51:29,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,803 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2023-11-29 04:51:29,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:51:29,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:51:29,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:51:29,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:51:29,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (1/1) ... [2023-11-29 04:51:29,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:51:29,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:29,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:51:29,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:51:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:51:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:51:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:51:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:51:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:51:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:51:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:51:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:51:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 04:51:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:51:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:51:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 04:51:29,888 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 04:51:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:51:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:51:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:51:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:51:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:51:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 04:51:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:51:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:51:29,891 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:51:30,023 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:51:30,024 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:51:30,237 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:51:30,365 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:51:30,365 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-29 04:51:30,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:51:30 BoogieIcfgContainer [2023-11-29 04:51:30,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:51:30,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:51:30,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:51:30,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:51:30,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:51:29" (1/3) ... [2023-11-29 04:51:30,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f74e441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:51:30, skipping insertion in model container [2023-11-29 04:51:30,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:29" (2/3) ... [2023-11-29 04:51:30,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f74e441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:51:30, skipping insertion in model container [2023-11-29 04:51:30,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:51:30" (3/3) ... [2023-11-29 04:51:30,374 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2023-11-29 04:51:30,383 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:51:30,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:51:30,393 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 04:51:30,393 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:51:30,432 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 04:51:30,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 62 transitions, 131 flow [2023-11-29 04:51:30,500 INFO L124 PetriNetUnfolderBase]: 11/78 cut-off events. [2023-11-29 04:51:30,500 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:51:30,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 78 events. 11/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 236 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2023-11-29 04:51:30,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 62 transitions, 131 flow [2023-11-29 04:51:30,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 61 transitions, 129 flow [2023-11-29 04:51:30,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:51:30,526 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;@7e0b78a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:51:30,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 04:51:30,531 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:51:30,531 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-29 04:51:30,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:51:30,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:30,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:51:30,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 04:51:30,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:30,538 INFO L85 PathProgramCache]: Analyzing trace with hash 346213551, now seen corresponding path program 1 times [2023-11-29 04:51:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:30,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541625497] [2023-11-29 04:51:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:30,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:30,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:30,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541625497] [2023-11-29 04:51:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541625497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:30,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:51:30,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737204111] [2023-11-29 04:51:30,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:30,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:51:30,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:51:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:51:30,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-29 04:51:30,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2023-11-29 04:51:30,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:30,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-29 04:51:30,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:31,078 INFO L124 PetriNetUnfolderBase]: 169/455 cut-off events. [2023-11-29 04:51:31,079 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:51:31,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 455 events. 169/455 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2203 event pairs, 0 based on Foata normal form. 84/506 useless extension candidates. Maximal degree in co-relation 797. Up to 327 conditions per place. [2023-11-29 04:51:31,086 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 54 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-11-29 04:51:31,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 277 flow [2023-11-29 04:51:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:51:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:51:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2023-11-29 04:51:31,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2023-11-29 04:51:31,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 164 transitions. [2023-11-29 04:51:31,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 164 transitions. [2023-11-29 04:51:31,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:31,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 164 transitions. [2023-11-29 04:51:31,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2023-11-29 04:51:31,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2023-11-29 04:51:31,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2023-11-29 04:51:31,136 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 129 flow. Second operand 4 states and 164 transitions. [2023-11-29 04:51:31,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 277 flow [2023-11-29 04:51:31,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 277 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:51:31,144 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 119 flow [2023-11-29 04:51:31,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-11-29 04:51:31,150 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-29 04:51:31,150 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 119 flow [2023-11-29 04:51:31,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2023-11-29 04:51:31,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:31,151 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:31,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:51:31,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 04:51:31,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1831810188, now seen corresponding path program 1 times [2023-11-29 04:51:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:31,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629588129] [2023-11-29 04:51:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:31,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:51:31,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:51:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:51:31,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:51:31,218 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:51:31,220 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-29 04:51:31,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-29 04:51:31,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-29 04:51:31,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-29 04:51:31,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-29 04:51:31,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-29 04:51:31,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-29 04:51:31,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-29 04:51:31,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-29 04:51:31,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-29 04:51:31,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-29 04:51:31,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-29 04:51:31,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-29 04:51:31,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:51:31,225 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 04:51:31,228 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 04:51:31,228 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 04:51:31,254 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:51:31,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 96 transitions, 208 flow [2023-11-29 04:51:31,278 INFO L124 PetriNetUnfolderBase]: 21/147 cut-off events. [2023-11-29 04:51:31,279 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 04:51:31,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 147 events. 21/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 527 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2023-11-29 04:51:31,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 96 transitions, 208 flow [2023-11-29 04:51:31,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 96 transitions, 208 flow [2023-11-29 04:51:31,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:51:31,286 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;@7e0b78a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:51:31,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 04:51:31,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:51:31,289 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 04:51:31,289 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:51:31,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:31,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:51:31,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 04:51:31,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash 437857583, now seen corresponding path program 1 times [2023-11-29 04:51:31,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:31,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256832618] [2023-11-29 04:51:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:31,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:31,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256832618] [2023-11-29 04:51:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256832618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:31,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:31,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:51:31,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370033275] [2023-11-29 04:51:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:31,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:51:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:51:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:51:31,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2023-11-29 04:51:31,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-29 04:51:31,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:31,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2023-11-29 04:51:31,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:32,900 INFO L124 PetriNetUnfolderBase]: 5917/12366 cut-off events. [2023-11-29 04:51:32,900 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-29 04:51:32,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21798 conditions, 12366 events. 5917/12366 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 104005 event pairs, 2795 based on Foata normal form. 2085/13309 useless extension candidates. Maximal degree in co-relation 1505. Up to 9312 conditions per place. [2023-11-29 04:51:32,974 INFO L140 encePairwiseOnDemand]: 76/96 looper letters, 74 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-11-29 04:51:32,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 111 transitions, 392 flow [2023-11-29 04:51:32,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:51:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:51:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2023-11-29 04:51:32,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-29 04:51:32,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 242 transitions. [2023-11-29 04:51:32,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 242 transitions. [2023-11-29 04:51:32,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:32,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 242 transitions. [2023-11-29 04:51:32,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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) [2023-11-29 04:51:32,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:32,984 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:32,984 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 208 flow. Second operand 4 states and 242 transitions. [2023-11-29 04:51:32,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 111 transitions, 392 flow [2023-11-29 04:51:32,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 111 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:51:32,990 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 204 flow [2023-11-29 04:51:32,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-11-29 04:51:32,991 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 5 predicate places. [2023-11-29 04:51:32,991 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 204 flow [2023-11-29 04:51:32,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-29 04:51:32,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:32,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:32,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:51:32,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 04:51:32,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:32,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2086878784, now seen corresponding path program 1 times [2023-11-29 04:51:32,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:32,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026037725] [2023-11-29 04:51:32,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:33,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:33,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026037725] [2023-11-29 04:51:33,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026037725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:51:33,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738685021] [2023-11-29 04:51:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:33,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:33,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:33,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:33,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:51:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:33,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:51:33,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:33,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:51:33,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738685021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:33,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:51:33,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-29 04:51:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921068728] [2023-11-29 04:51:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:33,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:51:33,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:33,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:51:33,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:51:33,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 96 [2023-11-29 04:51:33,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2023-11-29 04:51:33,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:33,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 96 [2023-11-29 04:51:33,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:34,549 INFO L124 PetriNetUnfolderBase]: 5930/10802 cut-off events. [2023-11-29 04:51:34,549 INFO L125 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2023-11-29 04:51:34,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21119 conditions, 10802 events. 5930/10802 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 81097 event pairs, 936 based on Foata normal form. 196/10262 useless extension candidates. Maximal degree in co-relation 20872. Up to 6080 conditions per place. [2023-11-29 04:51:34,622 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 96 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2023-11-29 04:51:34,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 135 transitions, 508 flow [2023-11-29 04:51:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:51:34,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:51:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2023-11-29 04:51:34,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067708333333334 [2023-11-29 04:51:34,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 233 transitions. [2023-11-29 04:51:34,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 233 transitions. [2023-11-29 04:51:34,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:34,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 233 transitions. [2023-11-29 04:51:34,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2023-11-29 04:51:34,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:34,630 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:34,630 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 204 flow. Second operand 4 states and 233 transitions. [2023-11-29 04:51:34,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 135 transitions, 508 flow [2023-11-29 04:51:34,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:51:34,639 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 210 flow [2023-11-29 04:51:34,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2023-11-29 04:51:34,640 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 6 predicate places. [2023-11-29 04:51:34,641 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 210 flow [2023-11-29 04:51:34,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2023-11-29 04:51:34,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:34,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:34,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:51:34,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:34,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 04:51:34,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1812063424, now seen corresponding path program 1 times [2023-11-29 04:51:34,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:34,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66602618] [2023-11-29 04:51:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:34,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:34,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66602618] [2023-11-29 04:51:34,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66602618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:34,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:34,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:51:34,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404906107] [2023-11-29 04:51:34,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:34,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:51:34,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:34,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:51:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:51:34,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2023-11-29 04:51:34,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2023-11-29 04:51:34,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:34,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2023-11-29 04:51:34,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:36,662 INFO L124 PetriNetUnfolderBase]: 7815/16532 cut-off events. [2023-11-29 04:51:36,663 INFO L125 PetriNetUnfolderBase]: For 2425/2628 co-relation queries the response was YES. [2023-11-29 04:51:36,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30578 conditions, 16532 events. 7815/16532 cut-off events. For 2425/2628 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 146532 event pairs, 2325 based on Foata normal form. 265/15586 useless extension candidates. Maximal degree in co-relation 21982. Up to 7716 conditions per place. [2023-11-29 04:51:36,736 INFO L140 encePairwiseOnDemand]: 87/96 looper letters, 143 selfloop transitions, 12 changer transitions 0/188 dead transitions. [2023-11-29 04:51:36,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 188 transitions, 808 flow [2023-11-29 04:51:36,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:51:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:51:36,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 323 transitions. [2023-11-29 04:51:36,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6729166666666667 [2023-11-29 04:51:36,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 323 transitions. [2023-11-29 04:51:36,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 323 transitions. [2023-11-29 04:51:36,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:36,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 323 transitions. [2023-11-29 04:51:36,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 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) [2023-11-29 04:51:36,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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) [2023-11-29 04:51:36,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 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) [2023-11-29 04:51:36,743 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 210 flow. Second operand 5 states and 323 transitions. [2023-11-29 04:51:36,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 188 transitions, 808 flow [2023-11-29 04:51:36,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 188 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:51:36,751 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 292 flow [2023-11-29 04:51:36,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-11-29 04:51:36,752 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2023-11-29 04:51:36,753 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 292 flow [2023-11-29 04:51:36,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2023-11-29 04:51:36,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:36,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 04:51:36,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:51:36,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 04:51:36,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:36,755 INFO L85 PathProgramCache]: Analyzing trace with hash -268732375, now seen corresponding path program 1 times [2023-11-29 04:51:36,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:36,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025749956] [2023-11-29 04:51:36,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:36,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:51:36,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:36,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025749956] [2023-11-29 04:51:36,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025749956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:36,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:36,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:51:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955480215] [2023-11-29 04:51:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:36,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:51:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:51:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:51:36,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2023-11-29 04:51:36,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2023-11-29 04:51:36,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:36,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2023-11-29 04:51:36,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:38,164 INFO L124 PetriNetUnfolderBase]: 7255/15355 cut-off events. [2023-11-29 04:51:38,164 INFO L125 PetriNetUnfolderBase]: For 4589/4598 co-relation queries the response was YES. [2023-11-29 04:51:38,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31006 conditions, 15355 events. 7255/15355 cut-off events. For 4589/4598 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 134379 event pairs, 2618 based on Foata normal form. 2/14358 useless extension candidates. Maximal degree in co-relation 19855. Up to 9965 conditions per place. [2023-11-29 04:51:38,238 INFO L140 encePairwiseOnDemand]: 91/96 looper letters, 116 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2023-11-29 04:51:38,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 722 flow [2023-11-29 04:51:38,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:51:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:51:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2023-11-29 04:51:38,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-29 04:51:38,240 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 236 transitions. [2023-11-29 04:51:38,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 236 transitions. [2023-11-29 04:51:38,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:38,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 236 transitions. [2023-11-29 04:51:38,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 04:51:38,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:38,243 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:38,243 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 292 flow. Second operand 4 states and 236 transitions. [2023-11-29 04:51:38,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 722 flow [2023-11-29 04:51:38,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 722 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:51:38,253 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 308 flow [2023-11-29 04:51:38,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2023-11-29 04:51:38,254 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 14 predicate places. [2023-11-29 04:51:38,254 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 308 flow [2023-11-29 04:51:38,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2023-11-29 04:51:38,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:38,255 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 04:51:38,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:51:38,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 04:51:38,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash -553759141, now seen corresponding path program 1 times [2023-11-29 04:51:38,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:38,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328838237] [2023-11-29 04:51:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:38,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:51:38,272 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:51:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:51:38,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:51:38,288 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:51:38,288 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-29 04:51:38,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-29 04:51:38,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-29 04:51:38,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-29 04:51:38,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-29 04:51:38,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-29 04:51:38,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-29 04:51:38,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-29 04:51:38,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-29 04:51:38,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-29 04:51:38,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-29 04:51:38,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-29 04:51:38,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-29 04:51:38,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-29 04:51:38,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-29 04:51:38,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-29 04:51:38,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-29 04:51:38,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:51:38,293 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 04:51:38,293 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 04:51:38,294 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 04:51:38,324 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 04:51:38,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 130 transitions, 287 flow [2023-11-29 04:51:38,347 INFO L124 PetriNetUnfolderBase]: 34/235 cut-off events. [2023-11-29 04:51:38,347 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 04:51:38,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 235 events. 34/235 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 958 event pairs, 1 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 162. Up to 12 conditions per place. [2023-11-29 04:51:38,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 130 transitions, 287 flow [2023-11-29 04:51:38,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 130 transitions, 287 flow [2023-11-29 04:51:38,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:51:38,353 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;@7e0b78a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:51:38,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-29 04:51:38,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:51:38,355 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-29 04:51:38,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:51:38,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:38,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:51:38,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 04:51:38,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:38,356 INFO L85 PathProgramCache]: Analyzing trace with hash 561947985, now seen corresponding path program 1 times [2023-11-29 04:51:38,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618847685] [2023-11-29 04:51:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:38,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:38,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618847685] [2023-11-29 04:51:38,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618847685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:38,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:38,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:51:38,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739802849] [2023-11-29 04:51:38,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:38,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:51:38,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:38,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:51:38,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:51:38,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 130 [2023-11-29 04:51:38,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 130 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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) [2023-11-29 04:51:38,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:38,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 130 [2023-11-29 04:51:38,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:55,911 INFO L124 PetriNetUnfolderBase]: 130345/233578 cut-off events. [2023-11-29 04:51:55,911 INFO L125 PetriNetUnfolderBase]: For 2373/2373 co-relation queries the response was YES. [2023-11-29 04:51:56,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415194 conditions, 233578 events. 130345/233578 cut-off events. For 2373/2373 co-relation queries the response was YES. Maximal size of possible extension queue 4678. Compared 2501306 event pairs, 84956 based on Foata normal form. 43285/257654 useless extension candidates. Maximal degree in co-relation 22693. Up to 180066 conditions per place. [2023-11-29 04:51:56,903 INFO L140 encePairwiseOnDemand]: 104/130 looper letters, 89 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2023-11-29 04:51:56,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 139 transitions, 489 flow [2023-11-29 04:51:56,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:51:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:51:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-11-29 04:51:56,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2023-11-29 04:51:56,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-11-29 04:51:56,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-11-29 04:51:56,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:56,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-11-29 04:51:56,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2023-11-29 04:51:56,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 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) [2023-11-29 04:51:56,908 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 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) [2023-11-29 04:51:56,909 INFO L175 Difference]: Start difference. First operand has 114 places, 130 transitions, 287 flow. Second operand 4 states and 315 transitions. [2023-11-29 04:51:56,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 139 transitions, 489 flow [2023-11-29 04:51:56,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 139 transitions, 489 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:51:56,913 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 271 flow [2023-11-29 04:51:56,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2023-11-29 04:51:56,914 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2023-11-29 04:51:56,914 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 271 flow [2023-11-29 04:51:56,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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) [2023-11-29 04:51:56,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:56,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:56,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:51:56,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 04:51:56,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1514964736, now seen corresponding path program 1 times [2023-11-29 04:51:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:56,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781347728] [2023-11-29 04:51:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:56,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781347728] [2023-11-29 04:51:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781347728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:51:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309793293] [2023-11-29 04:51:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:56,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:56,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:56,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:56,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:51:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:57,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:51:57,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:57,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:51:57,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309793293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:57,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:51:57,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-29 04:51:57,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982577875] [2023-11-29 04:51:57,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:57,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:51:57,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:57,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:51:57,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:51:57,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 130 [2023-11-29 04:51:57,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2023-11-29 04:51:57,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:57,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 130 [2023-11-29 04:51:57,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:12,037 INFO L124 PetriNetUnfolderBase]: 130358/201180 cut-off events. [2023-11-29 04:52:12,037 INFO L125 PetriNetUnfolderBase]: For 7841/7841 co-relation queries the response was YES. [2023-11-29 04:52:12,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394657 conditions, 201180 events. 130358/201180 cut-off events. For 7841/7841 co-relation queries the response was YES. Maximal size of possible extension queue 3763. Compared 1804383 event pairs, 21334 based on Foata normal form. 2940/192485 useless extension candidates. Maximal degree in co-relation 366281. Up to 117054 conditions per place. [2023-11-29 04:52:13,137 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 137 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2023-11-29 04:52:13,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 189 transitions, 709 flow [2023-11-29 04:52:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:52:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:52:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2023-11-29 04:52:13,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6269230769230769 [2023-11-29 04:52:13,140 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 326 transitions. [2023-11-29 04:52:13,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 326 transitions. [2023-11-29 04:52:13,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:13,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 326 transitions. [2023-11-29 04:52:13,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2023-11-29 04:52:13,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 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) [2023-11-29 04:52:13,143 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 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) [2023-11-29 04:52:13,143 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 271 flow. Second operand 4 states and 326 transitions. [2023-11-29 04:52:13,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 189 transitions, 709 flow [2023-11-29 04:52:13,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 189 transitions, 707 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:52:13,204 INFO L231 Difference]: Finished difference. Result has 120 places, 111 transitions, 277 flow [2023-11-29 04:52:13,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=120, PETRI_TRANSITIONS=111} [2023-11-29 04:52:13,205 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 6 predicate places. [2023-11-29 04:52:13,205 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 277 flow [2023-11-29 04:52:13,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2023-11-29 04:52:13,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:13,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:13,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:52:13,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca467dd3-dcb6-408a-8f75-e98dd87b23e6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:13,406 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 04:52:13,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash -317056480, now seen corresponding path program 1 times [2023-11-29 04:52:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236700548] [2023-11-29 04:52:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:13,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:13,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:13,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236700548] [2023-11-29 04:52:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236700548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:13,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:13,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:52:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935056988] [2023-11-29 04:52:13,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:13,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:52:13,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:52:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:52:13,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 130 [2023-11-29 04:52:13,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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) [2023-11-29 04:52:13,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:13,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 130 [2023-11-29 04:52:13,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:37,886 INFO L124 PetriNetUnfolderBase]: 188843/327527 cut-off events. [2023-11-29 04:52:37,887 INFO L125 PetriNetUnfolderBase]: For 41091/44464 co-relation queries the response was YES. [2023-11-29 04:52:38,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613142 conditions, 327527 events. 188843/327527 cut-off events. For 41091/44464 co-relation queries the response was YES. Maximal size of possible extension queue 6706. Compared 3529767 event pairs, 63789 based on Foata normal form. 4183/309094 useless extension candidates. Maximal degree in co-relation 322956. Up to 173181 conditions per place. [2023-11-29 04:52:39,581 INFO L140 encePairwiseOnDemand]: 119/130 looper letters, 205 selfloop transitions, 16 changer transitions 0/267 dead transitions. [2023-11-29 04:52:39,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 267 transitions, 1139 flow [2023-11-29 04:52:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:52:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:52:39,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-11-29 04:52:39,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6984615384615385 [2023-11-29 04:52:39,584 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-11-29 04:52:39,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-11-29 04:52:39,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:39,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-11-29 04:52:39,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2023-11-29 04:52:39,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 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) [2023-11-29 04:52:39,588 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 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) [2023-11-29 04:52:39,588 INFO L175 Difference]: Start difference. First operand has 120 places, 111 transitions, 277 flow. Second operand 5 states and 454 transitions. [2023-11-29 04:52:39,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 267 transitions, 1139 flow [2023-11-29 04:52:39,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 267 transitions, 1101 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:52:39,617 INFO L231 Difference]: Finished difference. Result has 125 places, 126 transitions, 393 flow [2023-11-29 04:52:39,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=125, PETRI_TRANSITIONS=126} [2023-11-29 04:52:39,618 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2023-11-29 04:52:39,618 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 126 transitions, 393 flow [2023-11-29 04:52:39,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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) [2023-11-29 04:52:39,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:39,619 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 04:52:39,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:52:39,619 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 04:52:39,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash -280732821, now seen corresponding path program 1 times [2023-11-29 04:52:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:39,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962924519] [2023-11-29 04:52:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:39,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:52:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:39,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962924519] [2023-11-29 04:52:39,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962924519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:39,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:39,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:52:39,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144909195] [2023-11-29 04:52:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:52:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:52:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:52:39,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 130 [2023-11-29 04:52:39,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 126 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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) [2023-11-29 04:52:39,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:39,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 130 [2023-11-29 04:52:39,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:53:05,337 INFO L124 PetriNetUnfolderBase]: 176347/305458 cut-off events. [2023-11-29 04:53:05,337 INFO L125 PetriNetUnfolderBase]: For 102436/102548 co-relation queries the response was YES. [2023-11-29 04:53:06,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636381 conditions, 305458 events. 176347/305458 cut-off events. For 102436/102548 co-relation queries the response was YES. Maximal size of possible extension queue 6248. Compared 3267586 event pairs, 46077 based on Foata normal form. 28/288103 useless extension candidates. Maximal degree in co-relation 481275. Up to 212637 conditions per place. [2023-11-29 04:53:06,933 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 165 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2023-11-29 04:53:06,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 218 transitions, 1017 flow [2023-11-29 04:53:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:53:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:53:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-11-29 04:53:06,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326923076923077 [2023-11-29 04:53:06,935 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-11-29 04:53:06,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-11-29 04:53:06,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:53:06,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-11-29 04:53:06,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2023-11-29 04:53:06,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 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) [2023-11-29 04:53:06,938 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 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) [2023-11-29 04:53:06,938 INFO L175 Difference]: Start difference. First operand has 125 places, 126 transitions, 393 flow. Second operand 4 states and 329 transitions. [2023-11-29 04:53:06,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 218 transitions, 1017 flow [2023-11-29 04:53:07,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 218 transitions, 1017 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:53:07,013 INFO L231 Difference]: Finished difference. Result has 128 places, 126 transitions, 409 flow [2023-11-29 04:53:07,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=128, PETRI_TRANSITIONS=126} [2023-11-29 04:53:07,014 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 14 predicate places. [2023-11-29 04:53:07,014 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 126 transitions, 409 flow [2023-11-29 04:53:07,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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) [2023-11-29 04:53:07,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:53:07,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:07,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:53:07,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 04:53:07,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:07,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1626864239, now seen corresponding path program 1 times [2023-11-29 04:53:07,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:07,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387348336] [2023-11-29 04:53:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:07,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:53:07,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387348336] [2023-11-29 04:53:07,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387348336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:53:07,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:53:07,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:53:07,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979776696] [2023-11-29 04:53:07,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:53:07,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:53:07,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:53:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:53:07,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 130 [2023-11-29 04:53:07,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 126 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2023-11-29 04:53:07,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:53:07,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 130 [2023-11-29 04:53:07,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:53:37,641 INFO L124 PetriNetUnfolderBase]: 205755/358081 cut-off events. [2023-11-29 04:53:37,641 INFO L125 PetriNetUnfolderBase]: For 159128/160021 co-relation queries the response was YES. [2023-11-29 04:53:38,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762290 conditions, 358081 events. 205755/358081 cut-off events. For 159128/160021 co-relation queries the response was YES. Maximal size of possible extension queue 7533. Compared 3918597 event pairs, 70414 based on Foata normal form. 9320/346248 useless extension candidates. Maximal degree in co-relation 488542. Up to 190941 conditions per place. [2023-11-29 04:53:39,599 INFO L140 encePairwiseOnDemand]: 119/130 looper letters, 205 selfloop transitions, 27 changer transitions 0/277 dead transitions. [2023-11-29 04:53:39,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 277 transitions, 1349 flow [2023-11-29 04:53:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:53:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:53:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2023-11-29 04:53:39,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696923076923077 [2023-11-29 04:53:39,601 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2023-11-29 04:53:39,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2023-11-29 04:53:39,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:53:39,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2023-11-29 04:53:39,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2023-11-29 04:53:39,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 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) [2023-11-29 04:53:39,605 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 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) [2023-11-29 04:53:39,605 INFO L175 Difference]: Start difference. First operand has 128 places, 126 transitions, 409 flow. Second operand 5 states and 453 transitions. [2023-11-29 04:53:39,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 277 transitions, 1349 flow [2023-11-29 04:53:39,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 277 transitions, 1326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:53:39,928 INFO L231 Difference]: Finished difference. Result has 133 places, 139 transitions, 578 flow [2023-11-29 04:53:39,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=133, PETRI_TRANSITIONS=139} [2023-11-29 04:53:39,929 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 19 predicate places. [2023-11-29 04:53:39,929 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 139 transitions, 578 flow [2023-11-29 04:53:39,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2023-11-29 04:53:39,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:53:39,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:39,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:53:39,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 04:53:39,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:39,930 INFO L85 PathProgramCache]: Analyzing trace with hash 540737853, now seen corresponding path program 1 times [2023-11-29 04:53:39,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:39,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992106921] [2023-11-29 04:53:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:39,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:39,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992106921] [2023-11-29 04:53:39,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992106921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:53:39,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:53:39,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:53:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672152810] [2023-11-29 04:53:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:53:39,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:53:39,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:53:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:53:39,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 130 [2023-11-29 04:53:39,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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) [2023-11-29 04:53:39,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:53:39,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 130 [2023-11-29 04:53:39,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand