./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl --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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:14:26,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:14:26,850 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:14:26,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:14:26,858 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:14:26,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:14:26,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:14:26,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:14:26,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:14:26,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:14:26,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:14:26,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:14:26,912 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:14:26,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:14:26,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:14:26,915 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:14:26,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:14:26,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:14:26,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:14:26,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:14:26,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:14:26,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:14:26,918 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:14:26,919 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:14:26,919 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:14:26,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:14:26,920 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:14:26,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:14:26,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:14:26,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:14:26,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:26,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:14:26,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:14:26,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:14:26,924 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:14:26,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:14:26,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:14:26,925 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:14:26,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:14:26,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:14:26,926 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:14:26,926 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_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2023-11-12 02:14:27,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:14:27,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:14:27,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:14:27,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:14:27,235 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:14:27,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-11-12 02:14:30,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:14:30,545 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:14:30,545 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-11-12 02:14:30,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/data/f484ad37f/2479d7dc065f4ea0ba00b082efa5b224/FLAGeeaa4b1d0 [2023-11-12 02:14:30,577 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/data/f484ad37f/2479d7dc065f4ea0ba00b082efa5b224 [2023-11-12 02:14:30,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:14:30,585 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:14:30,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:30,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:14:30,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:14:30,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:30" (1/1) ... [2023-11-12 02:14:30,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552f6507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:30, skipping insertion in model container [2023-11-12 02:14:30,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:30" (1/1) ... [2023-11-12 02:14:30,657 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:14:31,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:31,066 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:14:31,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:31,164 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:14:31,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31 WrapperNode [2023-11-12 02:14:31,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:31,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:31,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:14:31,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:14:31,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,244 INFO L138 Inliner]: procedures = 171, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2023-11-12 02:14:31,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:31,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:14:31,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:14:31,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:14:31,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:14:31,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:14:31,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:14:31,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:14:31,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (1/1) ... [2023-11-12 02:14:31,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:14:31,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:14:31,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:14:31,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e01aee-68af-46d7-9401-44e0d33da89c/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:14:31,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:14:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:14:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:14:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:14:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:14:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:14:31,389 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:14:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:14:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-11-12 02:14:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:14:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:14:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:14:31,392 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:14:31,572 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:14:31,575 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:14:31,838 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:14:31,846 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:14:31,847 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-12 02:14:31,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:31 BoogieIcfgContainer [2023-11-12 02:14:31,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:14:31,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:14:31,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:14:31,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:14:31,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:14:30" (1/3) ... [2023-11-12 02:14:31,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfcd7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:14:31, skipping insertion in model container [2023-11-12 02:14:31,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:31" (2/3) ... [2023-11-12 02:14:31,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfcd7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:14:31, skipping insertion in model container [2023-11-12 02:14:31,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:31" (3/3) ... [2023-11-12 02:14:31,859 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-11-12 02:14:31,868 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:14:31,878 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:14:31,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:14:31,878 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:14:31,955 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:14:31,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 127 transitions, 261 flow [2023-11-12 02:14:32,080 INFO L124 PetriNetUnfolderBase]: 23/173 cut-off events. [2023-11-12 02:14:32,080 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:14:32,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 23/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 473 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-11-12 02:14:32,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 127 transitions, 261 flow [2023-11-12 02:14:32,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 124 transitions, 255 flow [2023-11-12 02:14:32,102 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:14:32,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 124 transitions, 255 flow [2023-11-12 02:14:32,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 124 transitions, 255 flow [2023-11-12 02:14:32,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 124 transitions, 255 flow [2023-11-12 02:14:32,190 INFO L124 PetriNetUnfolderBase]: 22/170 cut-off events. [2023-11-12 02:14:32,190 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:14:32,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 170 events. 22/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 471 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-11-12 02:14:32,197 INFO L119 LiptonReduction]: Number of co-enabled transitions 4032 [2023-11-12 02:14:35,519 INFO L134 LiptonReduction]: Checked pairs total: 6087 [2023-11-12 02:14:35,519 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-12 02:14:35,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:14:35,543 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;@6615c774, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:14:35,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:14:35,548 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:14:35,548 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2023-11-12 02:14:35,548 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:14:35,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:35,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:14:35,550 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)] === [2023-11-12 02:14:35,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 15345179, now seen corresponding path program 1 times [2023-11-12 02:14:35,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:35,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903803778] [2023-11-12 02:14:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:35,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:35,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903803778] [2023-11-12 02:14:35,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903803778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:35,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:35,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:14:35,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974719299] [2023-11-12 02:14:35,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:35,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:35,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:36,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:36,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:36,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 241 [2023-11-12 02:14:36,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 41 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:36,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 241 [2023-11-12 02:14:36,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:36,187 INFO L124 PetriNetUnfolderBase]: 109/258 cut-off events. [2023-11-12 02:14:36,187 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:14:36,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 258 events. 109/258 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1178 event pairs, 0 based on Foata normal form. 9/204 useless extension candidates. Maximal degree in co-relation 464. Up to 217 conditions per place. [2023-11-12 02:14:36,191 INFO L140 encePairwiseOnDemand]: 226/241 looper letters, 37 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-12 02:14:36,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 169 flow [2023-11-12 02:14:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:14:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:14:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-11-12 02:14:36,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159059474412172 [2023-11-12 02:14:36,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-11-12 02:14:36,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-11-12 02:14:36,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:36,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-11-12 02:14:36,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,247 INFO L175 Difference]: Start difference. First operand has 34 places, 41 transitions, 89 flow. Second operand 3 states and 373 transitions. [2023-11-12 02:14:36,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 169 flow [2023-11-12 02:14:36,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:14:36,257 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 73 flow [2023-11-12 02:14:36,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-12 02:14:36,264 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-11-12 02:14:36,265 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 73 flow [2023-11-12 02:14:36,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:36,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:36,266 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:14:36,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:14:36,267 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)] === [2023-11-12 02:14:36,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1861833465, now seen corresponding path program 1 times [2023-11-12 02:14:36,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:36,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887445055] [2023-11-12 02:14:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:14:36,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:14:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:14:36,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:14:36,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:14:36,409 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-12 02:14:36,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-12 02:14:36,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-12 02:14:36,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-12 02:14:36,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-12 02:14:36,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-12 02:14:36,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-12 02:14:36,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-12 02:14:36,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-12 02:14:36,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-12 02:14:36,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-12 02:14:36,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-12 02:14:36,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-12 02:14:36,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:14:36,421 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:14:36,425 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:14:36,425 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:14:36,470 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:14:36,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 165 transitions, 346 flow [2023-11-12 02:14:36,558 INFO L124 PetriNetUnfolderBase]: 40/295 cut-off events. [2023-11-12 02:14:36,559 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:14:36,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 295 events. 40/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 952 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 175. Up to 9 conditions per place. [2023-11-12 02:14:36,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 165 transitions, 346 flow [2023-11-12 02:14:36,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 165 transitions, 346 flow [2023-11-12 02:14:36,570 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:14:36,570 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 165 transitions, 346 flow [2023-11-12 02:14:36,570 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 165 transitions, 346 flow [2023-11-12 02:14:36,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 165 transitions, 346 flow [2023-11-12 02:14:36,616 INFO L124 PetriNetUnfolderBase]: 40/295 cut-off events. [2023-11-12 02:14:36,617 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:14:36,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 295 events. 40/295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 952 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 175. Up to 9 conditions per place. [2023-11-12 02:14:36,634 INFO L119 LiptonReduction]: Number of co-enabled transitions 12024 [2023-11-12 02:14:40,119 INFO L134 LiptonReduction]: Checked pairs total: 27412 [2023-11-12 02:14:40,120 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-11-12 02:14:40,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:14:40,124 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;@6615c774, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:14:40,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 02:14:40,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:14:40,129 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-11-12 02:14:40,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:14:40,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:40,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:14:40,130 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)] === [2023-11-12 02:14:40,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash 799150959, now seen corresponding path program 1 times [2023-11-12 02:14:40,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:40,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666668592] [2023-11-12 02:14:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:40,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:40,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:40,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666668592] [2023-11-12 02:14:40,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666668592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:40,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:40,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:14:40,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132144946] [2023-11-12 02:14:40,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:40,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:40,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:40,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:40,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:40,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 301 [2023-11-12 02:14:40,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 69 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:40,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:40,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 301 [2023-11-12 02:14:40,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:41,488 INFO L124 PetriNetUnfolderBase]: 5379/8576 cut-off events. [2023-11-12 02:14:41,488 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-12 02:14:41,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17058 conditions, 8576 events. 5379/8576 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 53871 event pairs, 2436 based on Foata normal form. 606/6412 useless extension candidates. Maximal degree in co-relation 1962. Up to 8388 conditions per place. [2023-11-12 02:14:41,551 INFO L140 encePairwiseOnDemand]: 281/301 looper letters, 61 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-12 02:14:41,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 69 transitions, 280 flow [2023-11-12 02:14:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:14:41,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:14:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-11-12 02:14:41,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448504983388704 [2023-11-12 02:14:41,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-11-12 02:14:41,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-11-12 02:14:41,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:41,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-11-12 02:14:41,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:41,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:41,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:41,568 INFO L175 Difference]: Start difference. First operand has 56 places, 69 transitions, 154 flow. Second operand 3 states and 492 transitions. [2023-11-12 02:14:41,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 69 transitions, 280 flow [2023-11-12 02:14:41,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:14:41,571 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 140 flow [2023-11-12 02:14:41,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-11-12 02:14:41,572 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-12 02:14:41,573 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 140 flow [2023-11-12 02:14:41,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:41,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:41,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:14:41,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:14:41,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:14:41,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:41,575 INFO L85 PathProgramCache]: Analyzing trace with hash -810398250, now seen corresponding path program 1 times [2023-11-12 02:14:41,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:41,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291459275] [2023-11-12 02:14:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:41,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:41,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:41,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291459275] [2023-11-12 02:14:41,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291459275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:41,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:41,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:14:41,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465363944] [2023-11-12 02:14:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:41,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:41,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:41,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 301 [2023-11-12 02:14:41,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:41,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:41,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 301 [2023-11-12 02:14:41,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:43,018 INFO L124 PetriNetUnfolderBase]: 5925/9900 cut-off events. [2023-11-12 02:14:43,018 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2023-11-12 02:14:43,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20542 conditions, 9900 events. 5925/9900 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 67554 event pairs, 1920 based on Foata normal form. 0/7510 useless extension candidates. Maximal degree in co-relation 20454. Up to 7075 conditions per place. [2023-11-12 02:14:43,104 INFO L140 encePairwiseOnDemand]: 287/301 looper letters, 82 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2023-11-12 02:14:43,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 416 flow [2023-11-12 02:14:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:14:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:14:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-11-12 02:14:43,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5559246954595792 [2023-11-12 02:14:43,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-11-12 02:14:43,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-11-12 02:14:43,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:43,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-11-12 02:14:43,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:43,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:43,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:43,117 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 140 flow. Second operand 3 states and 502 transitions. [2023-11-12 02:14:43,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 416 flow [2023-11-12 02:14:43,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:14:43,124 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 198 flow [2023-11-12 02:14:43,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-12 02:14:43,126 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-12 02:14:43,126 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 198 flow [2023-11-12 02:14:43,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:43,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:43,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:14:43,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:14:43,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:14:43,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1559647891, now seen corresponding path program 1 times [2023-11-12 02:14:43,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:43,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684226641] [2023-11-12 02:14:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:43,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:14:43,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:43,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684226641] [2023-11-12 02:14:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684226641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:43,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:14:43,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631236929] [2023-11-12 02:14:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:43,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:43,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 301 [2023-11-12 02:14:43,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:43,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:43,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 301 [2023-11-12 02:14:43,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:44,399 INFO L124 PetriNetUnfolderBase]: 5574/9300 cut-off events. [2023-11-12 02:14:44,399 INFO L125 PetriNetUnfolderBase]: For 2101/2101 co-relation queries the response was YES. [2023-11-12 02:14:44,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22058 conditions, 9300 events. 5574/9300 cut-off events. For 2101/2101 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 63658 event pairs, 1773 based on Foata normal form. 0/7777 useless extension candidates. Maximal degree in co-relation 18150. Up to 7717 conditions per place. [2023-11-12 02:14:44,469 INFO L140 encePairwiseOnDemand]: 297/301 looper letters, 79 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-11-12 02:14:44,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 452 flow [2023-11-12 02:14:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:14:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:14:44,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-11-12 02:14:44,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293466223698782 [2023-11-12 02:14:44,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-11-12 02:14:44,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-11-12 02:14:44,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:44,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-11-12 02:14:44,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:44,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:44,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:44,482 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 198 flow. Second operand 3 states and 478 transitions. [2023-11-12 02:14:44,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 452 flow [2023-11-12 02:14:44,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:14:44,496 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 198 flow [2023-11-12 02:14:44,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-12 02:14:44,497 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-12 02:14:44,498 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 198 flow [2023-11-12 02:14:44,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:44,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:44,499 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:14:44,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:14:44,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 02:14:44,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1559647892, now seen corresponding path program 1 times [2023-11-12 02:14:44,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:44,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745459984] [2023-11-12 02:14:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:44,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:44,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745459984] [2023-11-12 02:14:44,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745459984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:44,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:44,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:14:44,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857322159] [2023-11-12 02:14:44,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:44,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:44,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:44,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 301 [2023-11-12 02:14:44,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:44,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:44,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 301 [2023-11-12 02:14:44,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:14:45,708 INFO L124 PetriNetUnfolderBase]: 5223/8765 cut-off events. [2023-11-12 02:14:45,709 INFO L125 PetriNetUnfolderBase]: For 2798/2798 co-relation queries the response was YES. [2023-11-12 02:14:45,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20712 conditions, 8765 events. 5223/8765 cut-off events. For 2798/2798 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 59826 event pairs, 1784 based on Foata normal form. 190/7668 useless extension candidates. Maximal degree in co-relation 16954. Up to 7153 conditions per place. [2023-11-12 02:14:45,764 INFO L140 encePairwiseOnDemand]: 298/301 looper letters, 80 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-12 02:14:45,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 444 flow [2023-11-12 02:14:45,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:14:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:14:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-11-12 02:14:45,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530454042081949 [2023-11-12 02:14:45,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-11-12 02:14:45,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-11-12 02:14:45,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:14:45,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-11-12 02:14:45,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:45,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:45,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:45,774 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 198 flow. Second operand 3 states and 479 transitions. [2023-11-12 02:14:45,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 444 flow [2023-11-12 02:14:45,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:14:45,780 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 194 flow [2023-11-12 02:14:45,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2023-11-12 02:14:45,785 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-12 02:14:45,785 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 194 flow [2023-11-12 02:14:45,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:45,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:45,786 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:14:45,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:14:45,787 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)] === [2023-11-12 02:14:45,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:45,787 INFO L85 PathProgramCache]: Analyzing trace with hash 122006595, now seen corresponding path program 1 times [2023-11-12 02:14:45,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:45,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578762535] [2023-11-12 02:14:45,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:14:45,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:14:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:14:45,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:14:45,838 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:14:45,838 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-12 02:14:45,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-12 02:14:45,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-12 02:14:45,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-12 02:14:45,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-12 02:14:45,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-12 02:14:45,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-12 02:14:45,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-12 02:14:45,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-12 02:14:45,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-12 02:14:45,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-12 02:14:45,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-12 02:14:45,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-12 02:14:45,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-12 02:14:45,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-12 02:14:45,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-12 02:14:45,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-12 02:14:45,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:14:45,847 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 02:14:45,848 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:14:45,848 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:14:45,891 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:14:45,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 203 transitions, 433 flow [2023-11-12 02:14:45,971 INFO L124 PetriNetUnfolderBase]: 62/460 cut-off events. [2023-11-12 02:14:45,972 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:14:45,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 62/460 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1671 event pairs, 1 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2023-11-12 02:14:45,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 203 transitions, 433 flow [2023-11-12 02:14:45,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 203 transitions, 433 flow [2023-11-12 02:14:45,980 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:14:45,981 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 203 transitions, 433 flow [2023-11-12 02:14:45,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 203 transitions, 433 flow [2023-11-12 02:14:45,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 203 transitions, 433 flow [2023-11-12 02:14:46,046 INFO L124 PetriNetUnfolderBase]: 62/460 cut-off events. [2023-11-12 02:14:46,046 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:14:46,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 62/460 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1671 event pairs, 1 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2023-11-12 02:14:46,075 INFO L119 LiptonReduction]: Number of co-enabled transitions 22248 [2023-11-12 02:14:49,702 INFO L134 LiptonReduction]: Checked pairs total: 54009 [2023-11-12 02:14:49,702 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-11-12 02:14:49,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:14:49,705 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;@6615c774, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:14:49,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-12 02:14:49,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:14:49,709 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-11-12 02:14:49,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:14:49,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:14:49,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:14:49,710 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)] === [2023-11-12 02:14:49,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1183736768, now seen corresponding path program 1 times [2023-11-12 02:14:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:49,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105000034] [2023-11-12 02:14:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:49,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105000034] [2023-11-12 02:14:49,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105000034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:49,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:49,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:14:49,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224283102] [2023-11-12 02:14:49,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:49,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:14:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:49,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:14:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:14:49,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 364 [2023-11-12 02:14:49,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 92 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:14:49,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:14:49,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 364 [2023-11-12 02:14:49,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:15:03,276 INFO L124 PetriNetUnfolderBase]: 102458/145569 cut-off events. [2023-11-12 02:15:03,276 INFO L125 PetriNetUnfolderBase]: For 2273/2273 co-relation queries the response was YES. [2023-11-12 02:15:03,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288119 conditions, 145569 events. 102458/145569 cut-off events. For 2273/2273 co-relation queries the response was YES. Maximal size of possible extension queue 4010. Compared 1092697 event pairs, 64766 based on Foata normal form. 15856/113029 useless extension candidates. Maximal degree in co-relation 24799. Up to 141113 conditions per place. [2023-11-12 02:15:04,141 INFO L140 encePairwiseOnDemand]: 338/364 looper letters, 74 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-12 02:15:04,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 351 flow [2023-11-12 02:15:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:15:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-11-12 02:15:04,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503663003663004 [2023-11-12 02:15:04,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-11-12 02:15:04,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-11-12 02:15:04,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:04,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-11-12 02:15:04,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,155 INFO L175 Difference]: Start difference. First operand has 74 places, 92 transitions, 211 flow. Second operand 3 states and 601 transitions. [2023-11-12 02:15:04,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 351 flow [2023-11-12 02:15:04,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 351 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:15:04,162 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 185 flow [2023-11-12 02:15:04,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-11-12 02:15:04,164 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-11-12 02:15:04,165 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 185 flow [2023-11-12 02:15:04,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:15:04,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:04,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:15:04,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 02:15:04,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash -588840244, now seen corresponding path program 1 times [2023-11-12 02:15:04,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:04,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020702698] [2023-11-12 02:15:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:04,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:15:04,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:04,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020702698] [2023-11-12 02:15:04,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020702698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:04,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:04,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:15:04,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701889045] [2023-11-12 02:15:04,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:04,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:04,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:04,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:04,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:04,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 364 [2023-11-12 02:15:04,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:15:04,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:15:04,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 364 [2023-11-12 02:15:04,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand