./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:53:16,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:53:17,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:53:17,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:53:17,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:53:17,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:53:17,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:53:17,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:53:17,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:53:17,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:53:17,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:53:17,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:53:17,089 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:53:17,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:53:17,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:53:17,093 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:53:17,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:53:17,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:53:17,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:53:17,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:53:17,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:53:17,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:53:17,096 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:53:17,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:53:17,097 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:53:17,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:53:17,099 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:53:17,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:53:17,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:53:17,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:53:17,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:17,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:53:17,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:53:17,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:53:17,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:53:17,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:53:17,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:53:17,105 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:53:17,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:53:17,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:53:17,106 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:53:17,107 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_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2023-11-06 22:53:17,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:53:17,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:53:17,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:53:17,573 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:53:17,574 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:53:17,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2023-11-06 22:53:20,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:53:21,064 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:53:21,065 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2023-11-06 22:53:21,085 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/data/d37cc405c/77bae2732b014c4392d2be9a57cb456f/FLAGa26e1f939 [2023-11-06 22:53:21,102 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/data/d37cc405c/77bae2732b014c4392d2be9a57cb456f [2023-11-06 22:53:21,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:53:21,107 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:53:21,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:21,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:53:21,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:53:21,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:21" (1/1) ... [2023-11-06 22:53:21,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d60237d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:21, skipping insertion in model container [2023-11-06 22:53:21,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:21" (1/1) ... [2023-11-06 22:53:21,171 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:53:21,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:21,814 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:53:21,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:53:22,029 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:53:22,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22 WrapperNode [2023-11-06 22:53:22,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:53:22,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:22,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:53:22,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:53:22,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,127 INFO L138 Inliner]: procedures = 270, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2023-11-06 22:53:22,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:53:22,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:53:22,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:53:22,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:53:22,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:53:22,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:53:22,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:53:22,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:53:22,207 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (1/1) ... [2023-11-06 22:53:22,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:53:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:22,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:53:22,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e099e3-4558-46c5-9dd0-3f49296a817f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:53:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:53:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:53:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:53:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:53:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:53:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:53:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:53:22,293 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:53:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:53:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:53:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:53:22,296 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:53:22,537 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:53:22,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:53:22,843 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:53:22,854 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:53:22,854 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-06 22:53:22,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:22 BoogieIcfgContainer [2023-11-06 22:53:22,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:53:22,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:53:22,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:53:22,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:53:22,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:53:21" (1/3) ... [2023-11-06 22:53:22,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736fbae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:22, skipping insertion in model container [2023-11-06 22:53:22,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:22" (2/3) ... [2023-11-06 22:53:22,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736fbae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:22, skipping insertion in model container [2023-11-06 22:53:22,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:22" (3/3) ... [2023-11-06 22:53:22,884 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-11-06 22:53:22,894 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:53:22,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:53:22,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:53:22,908 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:53:23,022 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:53:23,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 146 transitions, 299 flow [2023-11-06 22:53:23,151 INFO L124 PetriNetUnfolderBase]: 25/197 cut-off events. [2023-11-06 22:53:23,151 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:53:23,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 197 events. 25/197 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 505 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2023-11-06 22:53:23,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 146 transitions, 299 flow [2023-11-06 22:53:23,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 143 transitions, 293 flow [2023-11-06 22:53:23,170 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:53:23,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 143 transitions, 293 flow [2023-11-06 22:53:23,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 143 transitions, 293 flow [2023-11-06 22:53:23,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 143 transitions, 293 flow [2023-11-06 22:53:23,274 INFO L124 PetriNetUnfolderBase]: 24/194 cut-off events. [2023-11-06 22:53:23,274 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:53:23,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 194 events. 24/194 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 497 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 96. Up to 6 conditions per place. [2023-11-06 22:53:23,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 4392 [2023-11-06 22:53:28,072 INFO L134 LiptonReduction]: Checked pairs total: 7251 [2023-11-06 22:53:28,072 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-11-06 22:53:28,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:53:28,101 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=LoopsAndPotentialCycles, 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;@4931b839, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:53:28,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-06 22:53:28,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:53:28,109 INFO L124 PetriNetUnfolderBase]: 3/11 cut-off events. [2023-11-06 22:53:28,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:28,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:28,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:53:28,111 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)] === [2023-11-06 22:53:28,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash 17505887, now seen corresponding path program 1 times [2023-11-06 22:53:28,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:28,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009166609] [2023-11-06 22:53:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:28,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:28,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:28,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009166609] [2023-11-06 22:53:28,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009166609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:28,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:28,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:28,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367867085] [2023-11-06 22:53:28,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:28,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:28,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:28,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:28,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:28,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 288 [2023-11-06 22:53:28,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 41 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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) [2023-11-06 22:53:28,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:28,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 288 [2023-11-06 22:53:28,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:28,813 INFO L124 PetriNetUnfolderBase]: 133/284 cut-off events. [2023-11-06 22:53:28,813 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:53:28,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 284 events. 133/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1152 event pairs, 99 based on Foata normal form. 11/211 useless extension candidates. Maximal degree in co-relation 551. Up to 267 conditions per place. [2023-11-06 22:53:28,818 INFO L140 encePairwiseOnDemand]: 273/288 looper letters, 39 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-06 22:53:28,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 175 flow [2023-11-06 22:53:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-06 22:53:28,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2023-11-06 22:53:28,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-06 22:53:28,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-06 22:53:28,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:28,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-06 22:53:28,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2023-11-06 22:53:28,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-11-06 22:53:28,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-11-06 22:53:28,863 INFO L175 Difference]: Start difference. First operand has 34 places, 41 transitions, 89 flow. Second operand 3 states and 435 transitions. [2023-11-06 22:53:28,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 175 flow [2023-11-06 22:53:28,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:53:28,870 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 77 flow [2023-11-06 22:53:28,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-06 22:53:28,881 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-06 22:53:28,882 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 77 flow [2023-11-06 22:53:28,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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) [2023-11-06 22:53:28,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:28,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:53:28,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:53:28,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:53:28,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:28,897 INFO L85 PathProgramCache]: Analyzing trace with hash -356701912, now seen corresponding path program 1 times [2023-11-06 22:53:28,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:28,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042940157] [2023-11-06 22:53:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:28,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:29,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:29,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042940157] [2023-11-06 22:53:29,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042940157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:29,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:29,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453832714] [2023-11-06 22:53:29,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:29,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-11-06 22:53:29,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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) [2023-11-06 22:53:29,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:29,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-11-06 22:53:29,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:29,201 INFO L124 PetriNetUnfolderBase]: 128/301 cut-off events. [2023-11-06 22:53:29,202 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-06 22:53:29,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 301 events. 128/301 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1264 event pairs, 20 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 621. Up to 177 conditions per place. [2023-11-06 22:53:29,206 INFO L140 encePairwiseOnDemand]: 280/288 looper letters, 41 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-11-06 22:53:29,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 211 flow [2023-11-06 22:53:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-06 22:53:29,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011574074074074 [2023-11-06 22:53:29,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-06 22:53:29,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-06 22:53:29,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:29,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-06 22:53:29,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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) [2023-11-06 22:53:29,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-11-06 22:53:29,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-11-06 22:53:29,218 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 77 flow. Second operand 3 states and 433 transitions. [2023-11-06 22:53:29,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 211 flow [2023-11-06 22:53:29,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:29,222 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 97 flow [2023-11-06 22:53:29,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-06 22:53:29,223 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-06 22:53:29,223 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 97 flow [2023-11-06 22:53:29,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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) [2023-11-06 22:53:29,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:29,224 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:53:29,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:53:29,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-06 22:53:29,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash -356670833, now seen corresponding path program 1 times [2023-11-06 22:53:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:29,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808250659] [2023-11-06 22:53:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:29,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:53:29,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:53:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:53:29,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:53:29,290 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:53:29,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-06 22:53:29,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-06 22:53:29,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-06 22:53:29,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-06 22:53:29,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-06 22:53:29,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-06 22:53:29,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-06 22:53:29,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-06 22:53:29,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-06 22:53:29,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-06 22:53:29,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-06 22:53:29,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-06 22:53:29,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-06 22:53:29,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:53:29,298 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:53:29,300 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:53:29,301 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:53:29,330 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:53:29,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 184 transitions, 384 flow [2023-11-06 22:53:29,405 INFO L124 PetriNetUnfolderBase]: 43/324 cut-off events. [2023-11-06 22:53:29,406 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:53:29,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 324 events. 43/324 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1006 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 199. Up to 9 conditions per place. [2023-11-06 22:53:29,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 184 transitions, 384 flow [2023-11-06 22:53:29,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 184 transitions, 384 flow [2023-11-06 22:53:29,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:53:29,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 184 transitions, 384 flow [2023-11-06 22:53:29,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 184 transitions, 384 flow [2023-11-06 22:53:29,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 184 transitions, 384 flow [2023-11-06 22:53:29,461 INFO L124 PetriNetUnfolderBase]: 43/324 cut-off events. [2023-11-06 22:53:29,461 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:53:29,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 324 events. 43/324 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1006 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 199. Up to 9 conditions per place. [2023-11-06 22:53:29,477 INFO L119 LiptonReduction]: Number of co-enabled transitions 12744 [2023-11-06 22:53:34,106 INFO L134 LiptonReduction]: Checked pairs total: 29749 [2023-11-06 22:53:34,106 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-11-06 22:53:34,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:53:34,110 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=LoopsAndPotentialCycles, 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;@4931b839, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:53:34,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:53:34,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:53:34,114 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-11-06 22:53:34,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:34,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:34,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:53:34,115 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)] === [2023-11-06 22:53:34,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash 907140527, now seen corresponding path program 1 times [2023-11-06 22:53:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:34,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775400747] [2023-11-06 22:53:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:34,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:34,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775400747] [2023-11-06 22:53:34,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775400747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:34,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:34,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:34,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816143364] [2023-11-06 22:53:34,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:34,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:34,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:34,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:34,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 346 [2023-11-06 22:53:34,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 69 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-06 22:53:34,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:34,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 346 [2023-11-06 22:53:34,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:35,386 INFO L124 PetriNetUnfolderBase]: 5772/9248 cut-off events. [2023-11-06 22:53:35,387 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-06 22:53:35,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18336 conditions, 9248 events. 5772/9248 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 57790 event pairs, 2604 based on Foata normal form. 410/6754 useless extension candidates. Maximal degree in co-relation 1965. Up to 8989 conditions per place. [2023-11-06 22:53:35,523 INFO L140 encePairwiseOnDemand]: 325/346 looper letters, 63 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-06 22:53:35,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 286 flow [2023-11-06 22:53:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-11-06 22:53:35,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346820809248555 [2023-11-06 22:53:35,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-11-06 22:53:35,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-11-06 22:53:35,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:35,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-11-06 22:53:35,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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) [2023-11-06 22:53:35,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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) [2023-11-06 22:53:35,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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) [2023-11-06 22:53:35,536 INFO L175 Difference]: Start difference. First operand has 56 places, 69 transitions, 154 flow. Second operand 3 states and 555 transitions. [2023-11-06 22:53:35,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 286 flow [2023-11-06 22:53:35,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:53:35,542 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 142 flow [2023-11-06 22:53:35,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, 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=142, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-11-06 22:53:35,545 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-06 22:53:35,545 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 142 flow [2023-11-06 22:53:35,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-06 22:53:35,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:35,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:35,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:53:35,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:53:35,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash -108673724, now seen corresponding path program 1 times [2023-11-06 22:53:35,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:35,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692603579] [2023-11-06 22:53:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:35,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:35,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:35,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692603579] [2023-11-06 22:53:35,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692603579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:35,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:35,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:35,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463075097] [2023-11-06 22:53:35,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:35,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:35,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:35,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:35,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:35,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-11-06 22:53:35,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2023-11-06 22:53:35,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:35,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-11-06 22:53:35,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:36,993 INFO L124 PetriNetUnfolderBase]: 6436/10650 cut-off events. [2023-11-06 22:53:36,993 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2023-11-06 22:53:37,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22381 conditions, 10650 events. 6436/10650 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 71573 event pairs, 2081 based on Foata normal form. 0/8117 useless extension candidates. Maximal degree in co-relation 22288. Up to 7671 conditions per place. [2023-11-06 22:53:37,090 INFO L140 encePairwiseOnDemand]: 332/346 looper letters, 84 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2023-11-06 22:53:37,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 95 transitions, 426 flow [2023-11-06 22:53:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-11-06 22:53:37,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433526011560693 [2023-11-06 22:53:37,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-11-06 22:53:37,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-11-06 22:53:37,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:37,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-11-06 22:53:37,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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) [2023-11-06 22:53:37,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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) [2023-11-06 22:53:37,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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) [2023-11-06 22:53:37,102 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 142 flow. Second operand 3 states and 564 transitions. [2023-11-06 22:53:37,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 95 transitions, 426 flow [2023-11-06 22:53:37,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:53:37,110 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 200 flow [2023-11-06 22:53:37,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=140, 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=200, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-06 22:53:37,112 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-06 22:53:37,113 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 200 flow [2023-11-06 22:53:37,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2023-11-06 22:53:37,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:37,114 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:53:37,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:53:37,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:53:37,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash -40635885, now seen corresponding path program 1 times [2023-11-06 22:53:37,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:37,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650260894] [2023-11-06 22:53:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:37,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:37,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650260894] [2023-11-06 22:53:37,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650260894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:37,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:37,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:53:37,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232567929] [2023-11-06 22:53:37,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:37,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:37,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:37,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:37,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 346 [2023-11-06 22:53:37,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2023-11-06 22:53:37,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:37,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 346 [2023-11-06 22:53:37,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:38,415 INFO L124 PetriNetUnfolderBase]: 6056/10045 cut-off events. [2023-11-06 22:53:38,415 INFO L125 PetriNetUnfolderBase]: For 2439/2439 co-relation queries the response was YES. [2023-11-06 22:53:38,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23956 conditions, 10045 events. 6056/10045 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 69680 event pairs, 1566 based on Foata normal form. 0/8425 useless extension candidates. Maximal degree in co-relation 19907. Up to 7745 conditions per place. [2023-11-06 22:53:38,477 INFO L140 encePairwiseOnDemand]: 342/346 looper letters, 81 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-11-06 22:53:38,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 456 flow [2023-11-06 22:53:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2023-11-06 22:53:38,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221579961464354 [2023-11-06 22:53:38,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2023-11-06 22:53:38,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2023-11-06 22:53:38,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:38,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2023-11-06 22:53:38,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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) [2023-11-06 22:53:38,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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) [2023-11-06 22:53:38,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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) [2023-11-06 22:53:38,490 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 200 flow. Second operand 3 states and 542 transitions. [2023-11-06 22:53:38,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 456 flow [2023-11-06 22:53:38,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:38,506 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 190 flow [2023-11-06 22:53:38,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=184, 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=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-11-06 22:53:38,510 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-11-06 22:53:38,510 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 190 flow [2023-11-06 22:53:38,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2023-11-06 22:53:38,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:38,511 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:53:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:53:38,512 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:53:38,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash -40635841, now seen corresponding path program 1 times [2023-11-06 22:53:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:38,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928731501] [2023-11-06 22:53:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:38,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:53:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928731501] [2023-11-06 22:53:38,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928731501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:38,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:38,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:53:38,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525040613] [2023-11-06 22:53:38,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:38,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:38,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:38,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:38,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:38,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 346 [2023-11-06 22:53:38,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-06 22:53:38,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:38,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 346 [2023-11-06 22:53:38,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:39,771 INFO L124 PetriNetUnfolderBase]: 5676/9455 cut-off events. [2023-11-06 22:53:39,772 INFO L125 PetriNetUnfolderBase]: For 1463/1463 co-relation queries the response was YES. [2023-11-06 22:53:39,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22292 conditions, 9455 events. 5676/9455 cut-off events. For 1463/1463 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 64310 event pairs, 812 based on Foata normal form. 0/8094 useless extension candidates. Maximal degree in co-relation 15460. Up to 8355 conditions per place. [2023-11-06 22:53:39,834 INFO L140 encePairwiseOnDemand]: 342/346 looper letters, 80 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-11-06 22:53:39,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 89 transitions, 444 flow [2023-11-06 22:53:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-11-06 22:53:39,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192678227360308 [2023-11-06 22:53:39,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-11-06 22:53:39,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-11-06 22:53:39,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:39,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-11-06 22:53:39,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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) [2023-11-06 22:53:39,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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) [2023-11-06 22:53:39,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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) [2023-11-06 22:53:39,850 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 190 flow. Second operand 3 states and 539 transitions. [2023-11-06 22:53:39,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 89 transitions, 444 flow [2023-11-06 22:53:39,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:39,885 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 196 flow [2023-11-06 22:53:39,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-11-06 22:53:39,887 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-11-06 22:53:39,889 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 196 flow [2023-11-06 22:53:39,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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) [2023-11-06 22:53:39,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:39,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:39,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:53:39,891 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:53:39,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1940092805, now seen corresponding path program 1 times [2023-11-06 22:53:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494255088] [2023-11-06 22:53:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:40,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:40,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494255088] [2023-11-06 22:53:40,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494255088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:40,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:40,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:53:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900266750] [2023-11-06 22:53:40,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:40,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:40,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:40,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:40,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 346 [2023-11-06 22:53:40,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2023-11-06 22:53:40,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:40,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 346 [2023-11-06 22:53:40,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:41,547 INFO L124 PetriNetUnfolderBase]: 6562/10911 cut-off events. [2023-11-06 22:53:41,547 INFO L125 PetriNetUnfolderBase]: For 3165/3165 co-relation queries the response was YES. [2023-11-06 22:53:41,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26017 conditions, 10911 events. 6562/10911 cut-off events. For 3165/3165 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 73634 event pairs, 974 based on Foata normal form. 98/9655 useless extension candidates. Maximal degree in co-relation 22017. Up to 4914 conditions per place. [2023-11-06 22:53:41,645 INFO L140 encePairwiseOnDemand]: 330/346 looper letters, 186 selfloop transitions, 26 changer transitions 0/217 dead transitions. [2023-11-06 22:53:41,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 217 transitions, 1101 flow [2023-11-06 22:53:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:53:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:53:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1278 transitions. [2023-11-06 22:53:41,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276630883567299 [2023-11-06 22:53:41,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1278 transitions. [2023-11-06 22:53:41,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1278 transitions. [2023-11-06 22:53:41,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:41,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1278 transitions. [2023-11-06 22:53:41,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 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) [2023-11-06 22:53:41,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 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) [2023-11-06 22:53:41,672 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 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) [2023-11-06 22:53:41,672 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 196 flow. Second operand 7 states and 1278 transitions. [2023-11-06 22:53:41,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 217 transitions, 1101 flow [2023-11-06 22:53:41,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 217 transitions, 1083 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:53:41,682 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 410 flow [2023-11-06 22:53:41,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2023-11-06 22:53:41,684 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-11-06 22:53:41,684 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 410 flow [2023-11-06 22:53:41,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2023-11-06 22:53:41,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:41,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:41,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:53:41,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:53:41,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:41,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1940092726, now seen corresponding path program 1 times [2023-11-06 22:53:41,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:41,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103510932] [2023-11-06 22:53:41,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:41,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:41,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:41,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103510932] [2023-11-06 22:53:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103510932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:41,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:41,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:53:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687182422] [2023-11-06 22:53:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:41,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 346 [2023-11-06 22:53:41,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2023-11-06 22:53:41,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:41,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 346 [2023-11-06 22:53:41,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:43,276 INFO L124 PetriNetUnfolderBase]: 6247/10522 cut-off events. [2023-11-06 22:53:43,276 INFO L125 PetriNetUnfolderBase]: For 10265/10265 co-relation queries the response was YES. [2023-11-06 22:53:43,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30018 conditions, 10522 events. 6247/10522 cut-off events. For 10265/10265 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 71839 event pairs, 908 based on Foata normal form. 289/9889 useless extension candidates. Maximal degree in co-relation 25714. Up to 5004 conditions per place. [2023-11-06 22:53:43,458 INFO L140 encePairwiseOnDemand]: 330/346 looper letters, 189 selfloop transitions, 33 changer transitions 0/227 dead transitions. [2023-11-06 22:53:43,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 227 transitions, 1355 flow [2023-11-06 22:53:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:53:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:53:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1275 transitions. [2023-11-06 22:53:43,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264244426094137 [2023-11-06 22:53:43,466 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1275 transitions. [2023-11-06 22:53:43,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1275 transitions. [2023-11-06 22:53:43,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:43,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1275 transitions. [2023-11-06 22:53:43,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.14285714285714) internal successors, (1275), 7 states have internal predecessors, (1275), 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) [2023-11-06 22:53:43,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 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) [2023-11-06 22:53:43,481 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 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) [2023-11-06 22:53:43,481 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 410 flow. Second operand 7 states and 1275 transitions. [2023-11-06 22:53:43,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 227 transitions, 1355 flow [2023-11-06 22:53:43,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 227 transitions, 1355 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:53:43,537 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 660 flow [2023-11-06 22:53:43,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2023-11-06 22:53:43,538 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-11-06 22:53:43,539 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 660 flow [2023-11-06 22:53:43,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 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) [2023-11-06 22:53:43,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:43,540 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:53:43,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:53:43,540 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:53:43,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:43,541 INFO L85 PathProgramCache]: Analyzing trace with hash -396308476, now seen corresponding path program 1 times [2023-11-06 22:53:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:43,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734462280] [2023-11-06 22:53:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:43,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:53:43,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:53:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:53:43,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:53:43,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:53:43,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-06 22:53:43,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-06 22:53:43,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-06 22:53:43,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-06 22:53:43,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-06 22:53:43,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-06 22:53:43,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-06 22:53:43,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-06 22:53:43,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-06 22:53:43,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-06 22:53:43,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-06 22:53:43,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-06 22:53:43,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-06 22:53:43,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-06 22:53:43,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-06 22:53:43,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-06 22:53:43,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-06 22:53:43,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:53:43,587 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:43,588 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:53:43,588 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:53:43,651 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:53:43,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 222 transitions, 471 flow [2023-11-06 22:53:43,793 INFO L124 PetriNetUnfolderBase]: 66/494 cut-off events. [2023-11-06 22:53:43,794 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:53:43,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 494 events. 66/494 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1758 event pairs, 1 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 332. Up to 16 conditions per place. [2023-11-06 22:53:43,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 222 transitions, 471 flow [2023-11-06 22:53:43,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 222 transitions, 471 flow [2023-11-06 22:53:43,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:53:43,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 222 transitions, 471 flow [2023-11-06 22:53:43,807 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 222 transitions, 471 flow [2023-11-06 22:53:43,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 222 transitions, 471 flow [2023-11-06 22:53:43,903 INFO L124 PetriNetUnfolderBase]: 66/494 cut-off events. [2023-11-06 22:53:43,904 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:53:43,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 494 events. 66/494 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1758 event pairs, 1 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 332. Up to 16 conditions per place. [2023-11-06 22:53:43,943 INFO L119 LiptonReduction]: Number of co-enabled transitions 23328 [2023-11-06 22:53:49,001 INFO L134 LiptonReduction]: Checked pairs total: 56765 [2023-11-06 22:53:49,001 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-11-06 22:53:49,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:53:49,005 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=LoopsAndPotentialCycles, 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;@4931b839, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:53:49,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-06 22:53:49,009 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:53:49,010 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-11-06 22:53:49,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:53:49,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:49,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:53:49,011 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)] === [2023-11-06 22:53:49,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1332435718, now seen corresponding path program 1 times [2023-11-06 22:53:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:49,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132423774] [2023-11-06 22:53:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:49,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132423774] [2023-11-06 22:53:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132423774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:49,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:49,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5133305] [2023-11-06 22:53:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:49,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:49,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:49,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 407 [2023-11-06 22:53:49,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 92 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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) [2023-11-06 22:53:49,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:49,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 407 [2023-11-06 22:53:49,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:03,269 INFO L124 PetriNetUnfolderBase]: 101334/144529 cut-off events. [2023-11-06 22:54:03,269 INFO L125 PetriNetUnfolderBase]: For 2606/2606 co-relation queries the response was YES. [2023-11-06 22:54:03,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285560 conditions, 144529 events. 101334/144529 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 5071. Compared 1135715 event pairs, 63773 based on Foata normal form. 16625/113424 useless extension candidates. Maximal degree in co-relation 15167. Up to 139600 conditions per place. [2023-11-06 22:54:04,089 INFO L140 encePairwiseOnDemand]: 380/407 looper letters, 75 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-11-06 22:54:04,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 87 transitions, 355 flow [2023-11-06 22:54:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-11-06 22:54:04,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542997542997543 [2023-11-06 22:54:04,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-11-06 22:54:04,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-11-06 22:54:04,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:04,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-11-06 22:54:04,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2023-11-06 22:54:04,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-06 22:54:04,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-06 22:54:04,102 INFO L175 Difference]: Start difference. First operand has 74 places, 92 transitions, 211 flow. Second operand 3 states and 663 transitions. [2023-11-06 22:54:04,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 87 transitions, 355 flow [2023-11-06 22:54:04,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 355 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:54:04,107 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 187 flow [2023-11-06 22:54:04,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, 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=187, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-11-06 22:54:04,109 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-11-06 22:54:04,109 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 187 flow [2023-11-06 22:54:04,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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) [2023-11-06 22:54:04,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:04,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:04,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:54:04,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:54:04,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash 579285980, now seen corresponding path program 1 times [2023-11-06 22:54:04,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:04,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056341117] [2023-11-06 22:54:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:04,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:54:04,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:04,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056341117] [2023-11-06 22:54:04,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056341117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:04,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:04,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:54:04,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650102794] [2023-11-06 22:54:04,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:04,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:04,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:04,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 407 [2023-11-06 22:54:04,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2023-11-06 22:54:04,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:04,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 407 [2023-11-06 22:54:04,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:21,294 INFO L124 PetriNetUnfolderBase]: 132409/192843 cut-off events. [2023-11-06 22:54:21,294 INFO L125 PetriNetUnfolderBase]: For 8800/8800 co-relation queries the response was YES. [2023-11-06 22:54:21,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398066 conditions, 192843 events. 132409/192843 cut-off events. For 8800/8800 co-relation queries the response was YES. Maximal size of possible extension queue 6717. Compared 1603300 event pairs, 56105 based on Foata normal form. 0/143941 useless extension candidates. Maximal degree in co-relation 397972. Up to 146616 conditions per place. [2023-11-06 22:54:22,619 INFO L140 encePairwiseOnDemand]: 387/407 looper letters, 104 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2023-11-06 22:54:22,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 543 flow [2023-11-06 22:54:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:54:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:54:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-11-06 22:54:22,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552006552006552 [2023-11-06 22:54:22,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-11-06 22:54:22,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-11-06 22:54:22,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:22,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-11-06 22:54:22,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 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) [2023-11-06 22:54:22,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-06 22:54:22,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-11-06 22:54:22,633 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 187 flow. Second operand 3 states and 674 transitions. [2023-11-06 22:54:22,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 543 flow [2023-11-06 22:54:22,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 121 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:54:22,663 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 269 flow [2023-11-06 22:54:22,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2023-11-06 22:54:22,664 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-11-06 22:54:22,664 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 269 flow [2023-11-06 22:54:22,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2023-11-06 22:54:22,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:22,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:54:22,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:54:22,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:54:22,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1432001447, now seen corresponding path program 1 times [2023-11-06 22:54:22,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:54:22,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733772209] [2023-11-06 22:54:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:22,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:54:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:54:22,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:54:22,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733772209] [2023-11-06 22:54:22,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733772209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:54:22,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:54:22,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:54:22,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321991759] [2023-11-06 22:54:22,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:54:22,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:54:22,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:54:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:54:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:54:22,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 407 [2023-11-06 22:54:22,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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) [2023-11-06 22:54:22,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:22,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 407 [2023-11-06 22:54:22,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand