./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:48,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:48,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:46:48,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:48,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:48,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:48,316 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:48,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:48,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:48,317 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:48,318 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:48,319 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:48,319 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:48,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:48,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:46:48,321 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:48,321 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:48,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:48,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:48,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:46:48,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:48,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:46:48,324 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:46:48,325 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:48,325 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:48,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:48,326 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:48,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:48,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:48,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:48,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:48,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:48,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:48,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:46:48,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:48,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:48,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:48,329 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:46:48,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:48,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:48,330 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:48,330 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_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 [2023-11-19 07:46:48,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:48,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:48,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:48,685 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:48,686 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:48,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-11-19 07:46:51,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:52,132 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:52,132 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-11-19 07:46:52,154 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/data/f76db424b/a9e7ebc568fb4abc8d8c816a64685418/FLAG817f98598 [2023-11-19 07:46:52,169 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/data/f76db424b/a9e7ebc568fb4abc8d8c816a64685418 [2023-11-19 07:46:52,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:52,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:52,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:52,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:52,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:52,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:52" (1/1) ... [2023-11-19 07:46:52,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14959cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:52, skipping insertion in model container [2023-11-19 07:46:52,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:52" (1/1) ... [2023-11-19 07:46:52,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:52,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:52,941 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:53,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:53,101 WARN L675 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:46:53,109 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:53,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53 WrapperNode [2023-11-19 07:46:53,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:53,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:53,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:53,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:53,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,197 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-11-19 07:46:53,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:53,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:53,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:53,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:53,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:53,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:53,277 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:53,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:53,278 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (1/1) ... [2023-11-19 07:46:53,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:53,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:53,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:53,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a22fd6c1-54ca-420f-a37e-8901ed10d64a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:53,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:46:53,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:46:53,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:46:53,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:46:53,339 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:46:53,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:53,339 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:46:53,339 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:46:53,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:46:53,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:53,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:53,341 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:46:53,478 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:53,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:53,729 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:53,740 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:53,741 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-19 07:46:53,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:53 BoogieIcfgContainer [2023-11-19 07:46:53,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:53,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:53,749 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:53,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:53,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:52" (1/3) ... [2023-11-19 07:46:53,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c25ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:53, skipping insertion in model container [2023-11-19 07:46:53,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:53" (2/3) ... [2023-11-19 07:46:53,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c25ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:53, skipping insertion in model container [2023-11-19 07:46:53,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:53" (3/3) ... [2023-11-19 07:46:53,756 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-11-19 07:46:53,765 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:46:53,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:53,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:46:53,775 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:46:53,885 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:46:53,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 144 transitions, 295 flow [2023-11-19 07:46:54,067 INFO L124 PetriNetUnfolderBase]: 19/190 cut-off events. [2023-11-19 07:46:54,067 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:46:54,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 190 events. 19/190 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 500 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-19 07:46:54,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 144 transitions, 295 flow [2023-11-19 07:46:54,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 141 transitions, 289 flow [2023-11-19 07:46:54,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:46:54,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 141 transitions, 289 flow [2023-11-19 07:46:54,152 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 141 transitions, 289 flow [2023-11-19 07:46:54,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 141 transitions, 289 flow [2023-11-19 07:46:54,199 INFO L124 PetriNetUnfolderBase]: 18/187 cut-off events. [2023-11-19 07:46:54,200 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:46:54,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 187 events. 18/187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 499 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-19 07:46:54,205 INFO L119 LiptonReduction]: Number of co-enabled transitions 5040 [2023-11-19 07:46:58,662 INFO L134 LiptonReduction]: Checked pairs total: 9314 [2023-11-19 07:46:58,662 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-11-19 07:46:58,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:58,685 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@335535bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:58,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:46:58,689 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:58,690 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 07:46:58,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:58,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:58,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:46:58,691 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)] === [2023-11-19 07:46:58,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash 16956021, now seen corresponding path program 1 times [2023-11-19 07:46:58,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:58,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415115097] [2023-11-19 07:46:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:59,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:59,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415115097] [2023-11-19 07:46:59,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415115097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:59,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:59,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:59,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274615457] [2023-11-19 07:46:59,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:59,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:59,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 273 [2023-11-19 07:46:59,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 48 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:59,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:59,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 273 [2023-11-19 07:46:59,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:59,313 INFO L124 PetriNetUnfolderBase]: 130/334 cut-off events. [2023-11-19 07:46:59,313 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:46:59,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 334 events. 130/334 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1672 event pairs, 0 based on Foata normal form. 25/286 useless extension candidates. Maximal degree in co-relation 597. Up to 274 conditions per place. [2023-11-19 07:46:59,323 INFO L140 encePairwiseOnDemand]: 257/273 looper letters, 40 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-19 07:46:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 187 flow [2023-11-19 07:46:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:59,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-11-19 07:46:59,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262515262515263 [2023-11-19 07:46:59,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-11-19 07:46:59,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-11-19 07:46:59,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:59,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-11-19 07:46:59,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:59,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:59,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:59,360 INFO L175 Difference]: Start difference. First operand has 41 places, 48 transitions, 103 flow. Second operand 3 states and 431 transitions. [2023-11-19 07:46:59,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 187 flow [2023-11-19 07:46:59,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 187 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:59,367 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 83 flow [2023-11-19 07:46:59,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-11-19 07:46:59,372 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-11-19 07:46:59,372 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 83 flow [2023-11-19 07:46:59,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:59,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:59,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:46:59,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:46:59,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:46:59,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:59,375 INFO L85 PathProgramCache]: Analyzing trace with hash -885076161, now seen corresponding path program 1 times [2023-11-19 07:46:59,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:59,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146213778] [2023-11-19 07:46:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:59,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:46:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:46:59,457 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:46:59,458 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:46:59,459 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 07:46:59,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-19 07:46:59,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-19 07:46:59,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-19 07:46:59,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-19 07:46:59,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-19 07:46:59,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-19 07:46:59,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-19 07:46:59,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-19 07:46:59,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-19 07:46:59,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-19 07:46:59,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-19 07:46:59,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-19 07:46:59,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:46:59,467 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:46:59,471 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:46:59,471 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:46:59,521 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:46:59,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 191 transitions, 398 flow [2023-11-19 07:46:59,599 INFO L124 PetriNetUnfolderBase]: 34/321 cut-off events. [2023-11-19 07:46:59,599 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:46:59,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 321 events. 34/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1034 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 192. Up to 8 conditions per place. [2023-11-19 07:46:59,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 191 transitions, 398 flow [2023-11-19 07:46:59,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 191 transitions, 398 flow [2023-11-19 07:46:59,609 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:46:59,609 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 191 transitions, 398 flow [2023-11-19 07:46:59,609 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 191 transitions, 398 flow [2023-11-19 07:46:59,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 191 transitions, 398 flow [2023-11-19 07:46:59,658 INFO L124 PetriNetUnfolderBase]: 34/321 cut-off events. [2023-11-19 07:46:59,659 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:46:59,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 321 events. 34/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1034 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 192. Up to 8 conditions per place. [2023-11-19 07:46:59,679 INFO L119 LiptonReduction]: Number of co-enabled transitions 15840 [2023-11-19 07:47:04,036 INFO L134 LiptonReduction]: Checked pairs total: 41091 [2023-11-19 07:47:04,037 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-11-19 07:47:04,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:04,041 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@335535bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:04,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:47:04,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:04,044 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:47:04,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:04,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:04,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:04,045 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)] === [2023-11-19 07:47:04,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash 898440604, now seen corresponding path program 1 times [2023-11-19 07:47:04,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:04,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667355766] [2023-11-19 07:47:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:04,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:04,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:04,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667355766] [2023-11-19 07:47:04,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667355766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:04,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:04,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:04,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877109514] [2023-11-19 07:47:04,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:04,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:04,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:04,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:04,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 344 [2023-11-19 07:47:04,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 77 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:04,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:04,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 344 [2023-11-19 07:47:04,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:05,681 INFO L124 PetriNetUnfolderBase]: 6980/11789 cut-off events. [2023-11-19 07:47:05,681 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-19 07:47:05,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22911 conditions, 11789 events. 6980/11789 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 82838 event pairs, 2067 based on Foata normal form. 441/9397 useless extension candidates. Maximal degree in co-relation 17881. Up to 7668 conditions per place. [2023-11-19 07:47:05,769 INFO L140 encePairwiseOnDemand]: 326/344 looper letters, 83 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-11-19 07:47:05,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 93 transitions, 372 flow [2023-11-19 07:47:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-11-19 07:47:05,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804263565891473 [2023-11-19 07:47:05,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-11-19 07:47:05,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-11-19 07:47:05,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:05,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-11-19 07:47:05,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:05,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:05,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:05,789 INFO L175 Difference]: Start difference. First operand has 65 places, 77 transitions, 170 flow. Second operand 3 states and 599 transitions. [2023-11-19 07:47:05,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 93 transitions, 372 flow [2023-11-19 07:47:05,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:47:05,795 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 140 flow [2023-11-19 07:47:05,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2023-11-19 07:47:05,797 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2023-11-19 07:47:05,797 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 140 flow [2023-11-19 07:47:05,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:05,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:05,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:05,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:47:05,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:47:05,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash 898440626, now seen corresponding path program 1 times [2023-11-19 07:47:05,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:05,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92028055] [2023-11-19 07:47:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:05,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:05,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92028055] [2023-11-19 07:47:05,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92028055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:05,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:05,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:05,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677252635] [2023-11-19 07:47:05,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:05,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:05,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:05,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:05,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:05,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 344 [2023-11-19 07:47:05,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:05,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:05,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 344 [2023-11-19 07:47:05,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:07,304 INFO L124 PetriNetUnfolderBase]: 6963/11249 cut-off events. [2023-11-19 07:47:07,304 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2023-11-19 07:47:07,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22657 conditions, 11249 events. 6963/11249 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 71789 event pairs, 3281 based on Foata normal form. 1/8736 useless extension candidates. Maximal degree in co-relation 6812. Up to 10971 conditions per place. [2023-11-19 07:47:07,377 INFO L140 encePairwiseOnDemand]: 340/344 looper letters, 68 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-11-19 07:47:07,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 316 flow [2023-11-19 07:47:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-11-19 07:47:07,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5406976744186046 [2023-11-19 07:47:07,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-11-19 07:47:07,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-11-19 07:47:07,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:07,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-11-19 07:47:07,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-19 07:47:07,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,389 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 140 flow. Second operand 3 states and 558 transitions. [2023-11-19 07:47:07,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 316 flow [2023-11-19 07:47:07,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:07,399 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 150 flow [2023-11-19 07:47:07,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-11-19 07:47:07,400 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2023-11-19 07:47:07,400 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 150 flow [2023-11-19 07:47:07,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:07,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:47:07,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:47:07,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:47:07,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1280274315, now seen corresponding path program 1 times [2023-11-19 07:47:07,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:07,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944309992] [2023-11-19 07:47:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:07,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:07,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944309992] [2023-11-19 07:47:07,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944309992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:07,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:07,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:07,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334947667] [2023-11-19 07:47:07,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:07,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:07,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:07,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 344 [2023-11-19 07:47:07,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:07,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 344 [2023-11-19 07:47:07,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:08,735 INFO L124 PetriNetUnfolderBase]: 6386/10831 cut-off events. [2023-11-19 07:47:08,736 INFO L125 PetriNetUnfolderBase]: For 413/413 co-relation queries the response was YES. [2023-11-19 07:47:08,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21697 conditions, 10831 events. 6386/10831 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 73211 event pairs, 881 based on Foata normal form. 0/8793 useless extension candidates. Maximal degree in co-relation 20959. Up to 8578 conditions per place. [2023-11-19 07:47:08,804 INFO L140 encePairwiseOnDemand]: 340/344 looper letters, 82 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2023-11-19 07:47:08,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 386 flow [2023-11-19 07:47:08,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:08,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-11-19 07:47:08,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513565891472868 [2023-11-19 07:47:08,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-11-19 07:47:08,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-11-19 07:47:08,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:08,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-11-19 07:47:08,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,817 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 150 flow. Second operand 3 states and 569 transitions. [2023-11-19 07:47:08,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 386 flow [2023-11-19 07:47:08,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:08,828 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 160 flow [2023-11-19 07:47:08,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-11-19 07:47:08,831 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2023-11-19 07:47:08,831 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 160 flow [2023-11-19 07:47:08,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:08,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:08,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:47:08,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:47:08,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:08,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2073298687, now seen corresponding path program 1 times [2023-11-19 07:47:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148628596] [2023-11-19 07:47:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:08,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148628596] [2023-11-19 07:47:08,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148628596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:08,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:08,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:08,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433307814] [2023-11-19 07:47:08,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:08,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:08,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 344 [2023-11-19 07:47:08,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:08,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 344 [2023-11-19 07:47:08,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:10,100 INFO L124 PetriNetUnfolderBase]: 6092/9789 cut-off events. [2023-11-19 07:47:10,100 INFO L125 PetriNetUnfolderBase]: For 2564/2564 co-relation queries the response was YES. [2023-11-19 07:47:10,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21104 conditions, 9789 events. 6092/9789 cut-off events. For 2564/2564 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 58241 event pairs, 2188 based on Foata normal form. 0/8108 useless extension candidates. Maximal degree in co-relation 16598. Up to 8118 conditions per place. [2023-11-19 07:47:10,149 INFO L140 encePairwiseOnDemand]: 337/344 looper letters, 77 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-11-19 07:47:10,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 392 flow [2023-11-19 07:47:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:10,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:10,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-11-19 07:47:10,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523255813953488 [2023-11-19 07:47:10,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-11-19 07:47:10,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-11-19 07:47:10,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:10,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-11-19 07:47:10,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:10,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:10,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 344.0) internal successors, (1376), 4 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:10,160 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 160 flow. Second operand 3 states and 570 transitions. [2023-11-19 07:47:10,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 392 flow [2023-11-19 07:47:10,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:10,166 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 181 flow [2023-11-19 07:47:10,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-11-19 07:47:10,170 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2023-11-19 07:47:10,170 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 181 flow [2023-11-19 07:47:10,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:10,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:10,171 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:47:10,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:47:10,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:47:10,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1983018896, now seen corresponding path program 1 times [2023-11-19 07:47:10,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:10,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512323116] [2023-11-19 07:47:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:10,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:10,202 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:47:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:47:10,233 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:47:10,234 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:47:10,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 07:47:10,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-19 07:47:10,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-19 07:47:10,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-19 07:47:10,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-19 07:47:10,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-19 07:47:10,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-19 07:47:10,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-19 07:47:10,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-19 07:47:10,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-19 07:47:10,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-19 07:47:10,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-19 07:47:10,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-19 07:47:10,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-19 07:47:10,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-19 07:47:10,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-19 07:47:10,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-19 07:47:10,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:47:10,242 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:47:10,243 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:47:10,243 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:47:10,278 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:47:10,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 238 transitions, 503 flow [2023-11-19 07:47:10,357 INFO L124 PetriNetUnfolderBase]: 54/495 cut-off events. [2023-11-19 07:47:10,357 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:47:10,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 495 events. 54/495 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1841 event pairs, 1 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2023-11-19 07:47:10,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 238 transitions, 503 flow [2023-11-19 07:47:10,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 238 transitions, 503 flow [2023-11-19 07:47:10,367 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:10,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 238 transitions, 503 flow [2023-11-19 07:47:10,368 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 238 transitions, 503 flow [2023-11-19 07:47:10,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 238 transitions, 503 flow [2023-11-19 07:47:10,441 INFO L124 PetriNetUnfolderBase]: 54/495 cut-off events. [2023-11-19 07:47:10,441 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:47:10,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 495 events. 54/495 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1841 event pairs, 1 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 329. Up to 16 conditions per place. [2023-11-19 07:47:10,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 30240 [2023-11-19 07:47:14,997 INFO L134 LiptonReduction]: Checked pairs total: 79173 [2023-11-19 07:47:14,998 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-11-19 07:47:15,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:15,000 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@335535bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:15,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 07:47:15,002 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:15,003 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:47:15,003 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:15,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:15,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:15,003 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)] === [2023-11-19 07:47:15,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1347614011, now seen corresponding path program 1 times [2023-11-19 07:47:15,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:15,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54354299] [2023-11-19 07:47:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:15,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:15,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:15,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54354299] [2023-11-19 07:47:15,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54354299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:15,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:15,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:15,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332504326] [2023-11-19 07:47:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:15,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:15,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:15,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:15,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:15,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 424 [2023-11-19 07:47:15,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 105 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:15,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:15,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 424 [2023-11-19 07:47:15,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:36,053 INFO L124 PetriNetUnfolderBase]: 176428/256000 cut-off events. [2023-11-19 07:47:36,053 INFO L125 PetriNetUnfolderBase]: For 2820/2820 co-relation queries the response was YES. [2023-11-19 07:47:36,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501633 conditions, 256000 events. 176428/256000 cut-off events. For 2820/2820 co-relation queries the response was YES. Maximal size of possible extension queue 5162. Compared 2106812 event pairs, 52646 based on Foata normal form. 15387/207800 useless extension candidates. Maximal degree in co-relation 230974. Up to 170011 conditions per place. [2023-11-19 07:47:37,546 INFO L140 encePairwiseOnDemand]: 399/424 looper letters, 115 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-11-19 07:47:37,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 128 transitions, 517 flow [2023-11-19 07:47:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-11-19 07:47:37,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5982704402515723 [2023-11-19 07:47:37,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-11-19 07:47:37,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-11-19 07:47:37,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:37,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-11-19 07:47:37,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,559 INFO L175 Difference]: Start difference. First operand has 87 places, 105 transitions, 237 flow. Second operand 3 states and 761 transitions. [2023-11-19 07:47:37,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 128 transitions, 517 flow [2023-11-19 07:47:37,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 128 transitions, 517 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:47:37,571 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 191 flow [2023-11-19 07:47:37,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2023-11-19 07:47:37,573 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-11-19 07:47:37,573 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 191 flow [2023-11-19 07:47:37,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:37,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:47:37,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:47:37,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:47:37,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:37,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1347614043, now seen corresponding path program 1 times [2023-11-19 07:47:37,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:37,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781566174] [2023-11-19 07:47:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:37,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:37,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781566174] [2023-11-19 07:47:37,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781566174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:37,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:37,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:37,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440340429] [2023-11-19 07:47:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:37,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:37,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 424 [2023-11-19 07:47:37,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:37,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:37,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 424 [2023-11-19 07:47:37,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand