./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:53:28,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:53:28,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:53:28,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:53:28,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:53:28,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:53:28,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:53:28,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:53:28,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:53:28,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:53:28,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:53:28,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:53:28,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:53:28,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:53:28,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:53:28,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:53:28,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:53:28,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:53:28,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:53:28,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:53:28,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:53:28,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:53:28,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:53:28,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:53:28,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:53:28,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:53:28,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:53:28,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:53:28,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:53:28,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:53:28,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:53:28,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:53:28,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:53:28,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:53:28,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:53:28,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:53:28,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:53:28,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:53:28,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:53:28,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:53:28,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:53:28,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:53:28,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:53:28,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:53:28,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:53:28,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:53:28,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:53:28,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:53:28,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:53:28,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:53:28,316 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:53:28,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:53:28,317 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:53:28,318 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:53:28,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:53:28,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:53:28,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:53:28,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:53:28,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:53:28,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:53:28,319 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:53:28,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:53:28,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:53:28,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:53:28,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:53:28,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:53:28,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:53:28,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:53:28,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:53:28,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:53:28,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:53:28,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:53:28,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:53:28,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:53:28,322 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:53:28,322 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:53:28,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:53:28,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2022-11-21 16:53:28,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:53:28,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:53:28,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:53:28,646 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:53:28,647 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:53:28,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/queue_ok.i [2022-11-21 16:53:31,768 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:53:32,175 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:53:32,177 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/sv-benchmarks/c/pthread/queue_ok.i [2022-11-21 16:53:32,196 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/data/1ee893ca9/dc60d868350e49c495ea4309a395e0e5/FLAGa4f6ed186 [2022-11-21 16:53:32,216 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/data/1ee893ca9/dc60d868350e49c495ea4309a395e0e5 [2022-11-21 16:53:32,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:53:32,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:53:32,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:53:32,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:53:32,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:53:32,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:53:32" (1/1) ... [2022-11-21 16:53:32,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b460889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:32, skipping insertion in model container [2022-11-21 16:53:32,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:53:32" (1/1) ... [2022-11-21 16:53:32,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:53:32,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:53:32,840 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2022-11-21 16:53:32,849 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2022-11-21 16:53:32,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:53:32,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:53:32,950 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2022-11-21 16:53:32,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2022-11-21 16:53:32,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:53:33,031 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:53:33,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33 WrapperNode [2022-11-21 16:53:33,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:53:33,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:53:33,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:53:33,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:53:33,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,125 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 214 [2022-11-21 16:53:33,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:53:33,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:53:33,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:53:33,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:53:33,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:53:33,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:53:33,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:53:33,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:53:33,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (1/1) ... [2022-11-21 16:53:33,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:53:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:53:33,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:53:33,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:53:33,294 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-21 16:53:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-21 16:53:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-21 16:53:33,296 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-21 16:53:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:53:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:53:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:53:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:53:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 16:53:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:53:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:53:33,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:53:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:53:33,299 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:53:33,552 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:53:33,554 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:53:34,021 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:53:34,045 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:53:34,046 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 16:53:34,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:53:34 BoogieIcfgContainer [2022-11-21 16:53:34,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:53:34,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:53:34,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:53:34,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:53:34,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:53:32" (1/3) ... [2022-11-21 16:53:34,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6895feca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:53:34, skipping insertion in model container [2022-11-21 16:53:34,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:53:33" (2/3) ... [2022-11-21 16:53:34,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6895feca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:53:34, skipping insertion in model container [2022-11-21 16:53:34,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:53:34" (3/3) ... [2022-11-21 16:53:34,056 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2022-11-21 16:53:34,067 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:53:34,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:53:34,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 16:53:34,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:53:34,247 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:53:34,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 251 transitions, 518 flow [2022-11-21 16:53:34,403 INFO L130 PetriNetUnfolder]: 13/249 cut-off events. [2022-11-21 16:53:34,403 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:53:34,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 249 events. 13/249 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 458 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 169. Up to 3 conditions per place. [2022-11-21 16:53:34,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 251 transitions, 518 flow [2022-11-21 16:53:34,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 239 transitions, 487 flow [2022-11-21 16:53:34,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:53:34,456 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d61f952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:53:34,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-21 16:53:34,527 INFO L130 PetriNetUnfolder]: 6/139 cut-off events. [2022-11-21 16:53:34,527 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 16:53:34,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:34,528 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:34,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:53:34,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:34,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1034587718, now seen corresponding path program 1 times [2022-11-21 16:53:34,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:34,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919231532] [2022-11-21 16:53:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:34,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:36,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:36,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919231532] [2022-11-21 16:53:36,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919231532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:36,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:36,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 16:53:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472699766] [2022-11-21 16:53:36,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:36,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:53:36,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:53:36,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:53:36,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 251 [2022-11-21 16:53:36,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 239 transitions, 487 flow. Second operand has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 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) [2022-11-21 16:53:36,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:36,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 251 [2022-11-21 16:53:36,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:37,339 INFO L130 PetriNetUnfolder]: 611/2940 cut-off events. [2022-11-21 16:53:37,340 INFO L131 PetriNetUnfolder]: For 88/91 co-relation queries the response was YES. [2022-11-21 16:53:37,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 2940 events. 611/2940 cut-off events. For 88/91 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 24667 event pairs, 459 based on Foata normal form. 118/2693 useless extension candidates. Maximal degree in co-relation 3504. Up to 882 conditions per place. [2022-11-21 16:53:37,366 INFO L137 encePairwiseOnDemand]: 234/251 looper letters, 42 selfloop transitions, 12 changer transitions 0/227 dead transitions. [2022-11-21 16:53:37,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 227 transitions, 571 flow [2022-11-21 16:53:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:53:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:53:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2477 transitions. [2022-11-21 16:53:37,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7591173766472571 [2022-11-21 16:53:37,389 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2477 transitions. [2022-11-21 16:53:37,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2477 transitions. [2022-11-21 16:53:37,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:37,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2477 transitions. [2022-11-21 16:53:37,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 190.53846153846155) internal successors, (2477), 13 states have internal predecessors, (2477), 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) [2022-11-21 16:53:37,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 251.0) internal successors, (3514), 14 states have internal predecessors, (3514), 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) [2022-11-21 16:53:37,421 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 251.0) internal successors, (3514), 14 states have internal predecessors, (3514), 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) [2022-11-21 16:53:37,423 INFO L175 Difference]: Start difference. First operand has 233 places, 239 transitions, 487 flow. Second operand 13 states and 2477 transitions. [2022-11-21 16:53:37,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 227 transitions, 571 flow [2022-11-21 16:53:37,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 227 transitions, 566 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:53:37,433 INFO L231 Difference]: Finished difference. Result has 235 places, 227 transitions, 482 flow [2022-11-21 16:53:37,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=482, PETRI_PLACES=235, PETRI_TRANSITIONS=227} [2022-11-21 16:53:37,440 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 2 predicate places. [2022-11-21 16:53:37,440 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 227 transitions, 482 flow [2022-11-21 16:53:37,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 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) [2022-11-21 16:53:37,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:37,442 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:37,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:53:37,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:53:37,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:37,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1366298667, now seen corresponding path program 1 times [2022-11-21 16:53:37,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:37,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964035833] [2022-11-21 16:53:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:37,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:48,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:48,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964035833] [2022-11-21 16:53:48,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964035833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:48,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:48,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-21 16:53:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767033031] [2022-11-21 16:53:48,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:48,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:53:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:53:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:53:48,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 251 [2022-11-21 16:53:48,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 227 transitions, 482 flow. Second operand has 18 states, 18 states have (on average 179.88888888888889) internal successors, (3238), 18 states have internal predecessors, (3238), 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) [2022-11-21 16:53:48,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:48,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 251 [2022-11-21 16:53:48,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:57,667 INFO L130 PetriNetUnfolder]: 1342/5185 cut-off events. [2022-11-21 16:53:57,668 INFO L131 PetriNetUnfolder]: For 31/34 co-relation queries the response was YES. [2022-11-21 16:53:57,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7370 conditions, 5185 events. 1342/5185 cut-off events. For 31/34 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 46642 event pairs, 872 based on Foata normal form. 1/4450 useless extension candidates. Maximal degree in co-relation 7271. Up to 1675 conditions per place. [2022-11-21 16:53:57,703 INFO L137 encePairwiseOnDemand]: 230/251 looper letters, 108 selfloop transitions, 27 changer transitions 0/299 dead transitions. [2022-11-21 16:53:57,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 299 transitions, 902 flow [2022-11-21 16:53:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 16:53:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 16:53:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3699 transitions. [2022-11-21 16:53:57,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7368525896414343 [2022-11-21 16:53:57,719 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3699 transitions. [2022-11-21 16:53:57,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3699 transitions. [2022-11-21 16:53:57,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:57,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3699 transitions. [2022-11-21 16:53:57,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 184.95) internal successors, (3699), 20 states have internal predecessors, (3699), 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) [2022-11-21 16:53:57,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 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) [2022-11-21 16:53:57,744 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 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) [2022-11-21 16:53:57,744 INFO L175 Difference]: Start difference. First operand has 235 places, 227 transitions, 482 flow. Second operand 20 states and 3699 transitions. [2022-11-21 16:53:57,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 299 transitions, 902 flow [2022-11-21 16:53:57,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 299 transitions, 879 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-21 16:53:57,759 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 616 flow [2022-11-21 16:53:57,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=616, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2022-11-21 16:53:57,760 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 19 predicate places. [2022-11-21 16:53:57,760 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 616 flow [2022-11-21 16:53:57,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 179.88888888888889) internal successors, (3238), 18 states have internal predecessors, (3238), 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) [2022-11-21 16:53:57,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:57,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:57,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:53:57,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:53:57,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:57,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1204215650, now seen corresponding path program 1 times [2022-11-21 16:53:57,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:57,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463687628] [2022-11-21 16:53:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:57,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:00,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:00,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463687628] [2022-11-21 16:54:00,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463687628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:00,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:00,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:54:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150693528] [2022-11-21 16:54:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:00,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:54:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:54:00,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:54:00,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 251 [2022-11-21 16:54:00,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 616 flow. Second operand has 20 states, 20 states have (on average 171.1) internal successors, (3422), 20 states have internal predecessors, (3422), 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) [2022-11-21 16:54:00,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:00,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 251 [2022-11-21 16:54:00,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:03,309 INFO L130 PetriNetUnfolder]: 2220/7783 cut-off events. [2022-11-21 16:54:03,309 INFO L131 PetriNetUnfolder]: For 889/896 co-relation queries the response was YES. [2022-11-21 16:54:03,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12410 conditions, 7783 events. 2220/7783 cut-off events. For 889/896 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 72945 event pairs, 175 based on Foata normal form. 86/7089 useless extension candidates. Maximal degree in co-relation 12298. Up to 1746 conditions per place. [2022-11-21 16:54:03,364 INFO L137 encePairwiseOnDemand]: 229/251 looper letters, 208 selfloop transitions, 44 changer transitions 0/409 dead transitions. [2022-11-21 16:54:03,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 409 transitions, 1501 flow [2022-11-21 16:54:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:54:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-21 16:54:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3958 transitions. [2022-11-21 16:54:03,376 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7167692864904021 [2022-11-21 16:54:03,377 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3958 transitions. [2022-11-21 16:54:03,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3958 transitions. [2022-11-21 16:54:03,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:03,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3958 transitions. [2022-11-21 16:54:03,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 179.9090909090909) internal successors, (3958), 22 states have internal predecessors, (3958), 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) [2022-11-21 16:54:03,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 251.0) internal successors, (5773), 23 states have internal predecessors, (5773), 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) [2022-11-21 16:54:03,400 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 251.0) internal successors, (5773), 23 states have internal predecessors, (5773), 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) [2022-11-21 16:54:03,401 INFO L175 Difference]: Start difference. First operand has 252 places, 248 transitions, 616 flow. Second operand 22 states and 3958 transitions. [2022-11-21 16:54:03,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 409 transitions, 1501 flow [2022-11-21 16:54:03,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 409 transitions, 1488 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-21 16:54:03,421 INFO L231 Difference]: Finished difference. Result has 273 places, 277 transitions, 861 flow [2022-11-21 16:54:03,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=861, PETRI_PLACES=273, PETRI_TRANSITIONS=277} [2022-11-21 16:54:03,423 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 40 predicate places. [2022-11-21 16:54:03,423 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 277 transitions, 861 flow [2022-11-21 16:54:03,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 171.1) internal successors, (3422), 20 states have internal predecessors, (3422), 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) [2022-11-21 16:54:03,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:03,426 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:03,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:54:03,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash -526008184, now seen corresponding path program 1 times [2022-11-21 16:54:03,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:03,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220734389] [2022-11-21 16:54:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:03,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:03,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:03,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220734389] [2022-11-21 16:54:03,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220734389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:03,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:03,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:54:03,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119110340] [2022-11-21 16:54:03,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:03,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:54:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:03,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:54:03,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:54:03,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 251 [2022-11-21 16:54:03,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 277 transitions, 861 flow. Second operand has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2022-11-21 16:54:03,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:03,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 251 [2022-11-21 16:54:03,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:04,185 INFO L130 PetriNetUnfolder]: 220/3315 cut-off events. [2022-11-21 16:54:04,186 INFO L131 PetriNetUnfolder]: For 227/229 co-relation queries the response was YES. [2022-11-21 16:54:04,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4051 conditions, 3315 events. 220/3315 cut-off events. For 227/229 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 29920 event pairs, 15 based on Foata normal form. 0/2895 useless extension candidates. Maximal degree in co-relation 3961. Up to 224 conditions per place. [2022-11-21 16:54:04,220 INFO L137 encePairwiseOnDemand]: 246/251 looper letters, 15 selfloop transitions, 4 changer transitions 0/284 dead transitions. [2022-11-21 16:54:04,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 284 transitions, 915 flow [2022-11-21 16:54:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:54:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:54:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 944 transitions. [2022-11-21 16:54:04,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9402390438247012 [2022-11-21 16:54:04,225 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 944 transitions. [2022-11-21 16:54:04,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 944 transitions. [2022-11-21 16:54:04,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:04,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 944 transitions. [2022-11-21 16:54:04,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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) [2022-11-21 16:54:04,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 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) [2022-11-21 16:54:04,235 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 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) [2022-11-21 16:54:04,235 INFO L175 Difference]: Start difference. First operand has 273 places, 277 transitions, 861 flow. Second operand 4 states and 944 transitions. [2022-11-21 16:54:04,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 284 transitions, 915 flow [2022-11-21 16:54:04,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 284 transitions, 882 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-21 16:54:04,245 INFO L231 Difference]: Finished difference. Result has 270 places, 280 transitions, 856 flow [2022-11-21 16:54:04,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=856, PETRI_PLACES=270, PETRI_TRANSITIONS=280} [2022-11-21 16:54:04,253 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 37 predicate places. [2022-11-21 16:54:04,253 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 280 transitions, 856 flow [2022-11-21 16:54:04,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2022-11-21 16:54:04,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:04,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:04,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:54:04,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1884600977, now seen corresponding path program 1 times [2022-11-21 16:54:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:04,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410325810] [2022-11-21 16:54:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:04,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:04,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:04,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410325810] [2022-11-21 16:54:04,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410325810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:04,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:04,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:54:04,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685685029] [2022-11-21 16:54:04,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:04,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:54:04,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:04,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:54:04,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:54:04,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 251 [2022-11-21 16:54:04,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 280 transitions, 856 flow. Second operand has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 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) [2022-11-21 16:54:04,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:04,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 251 [2022-11-21 16:54:04,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:05,351 INFO L130 PetriNetUnfolder]: 372/4921 cut-off events. [2022-11-21 16:54:05,352 INFO L131 PetriNetUnfolder]: For 323/333 co-relation queries the response was YES. [2022-11-21 16:54:05,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6383 conditions, 4921 events. 372/4921 cut-off events. For 323/333 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 51818 event pairs, 31 based on Foata normal form. 0/4345 useless extension candidates. Maximal degree in co-relation 6298. Up to 486 conditions per place. [2022-11-21 16:54:05,386 INFO L137 encePairwiseOnDemand]: 244/251 looper letters, 21 selfloop transitions, 4 changer transitions 0/290 dead transitions. [2022-11-21 16:54:05,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 290 transitions, 929 flow [2022-11-21 16:54:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:54:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:54:05,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2022-11-21 16:54:05,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9306772908366534 [2022-11-21 16:54:05,390 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2022-11-21 16:54:05,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2022-11-21 16:54:05,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:05,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2022-11-21 16:54:05,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 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) [2022-11-21 16:54:05,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:05,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:05,397 INFO L175 Difference]: Start difference. First operand has 270 places, 280 transitions, 856 flow. Second operand 5 states and 1168 transitions. [2022-11-21 16:54:05,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 290 transitions, 929 flow [2022-11-21 16:54:05,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 290 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:54:05,412 INFO L231 Difference]: Finished difference. Result has 276 places, 283 transitions, 886 flow [2022-11-21 16:54:05,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=886, PETRI_PLACES=276, PETRI_TRANSITIONS=283} [2022-11-21 16:54:05,415 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 43 predicate places. [2022-11-21 16:54:05,416 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 283 transitions, 886 flow [2022-11-21 16:54:05,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 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) [2022-11-21 16:54:05,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:05,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:05,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:54:05,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:05,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1942994580, now seen corresponding path program 1 times [2022-11-21 16:54:05,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:05,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960442476] [2022-11-21 16:54:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:05,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:08,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:08,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960442476] [2022-11-21 16:54:08,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960442476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:08,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:08,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-21 16:54:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880325492] [2022-11-21 16:54:08,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:08,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:54:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:54:08,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:54:08,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 251 [2022-11-21 16:54:08,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 283 transitions, 886 flow. Second operand has 18 states, 18 states have (on average 180.05555555555554) internal successors, (3241), 18 states have internal predecessors, (3241), 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) [2022-11-21 16:54:08,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:08,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 251 [2022-11-21 16:54:08,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:14,712 INFO L130 PetriNetUnfolder]: 6627/24237 cut-off events. [2022-11-21 16:54:14,713 INFO L131 PetriNetUnfolder]: For 4268/4335 co-relation queries the response was YES. [2022-11-21 16:54:14,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41547 conditions, 24237 events. 6627/24237 cut-off events. For 4268/4335 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 295776 event pairs, 4023 based on Foata normal form. 11/21524 useless extension candidates. Maximal degree in co-relation 41435. Up to 8780 conditions per place. [2022-11-21 16:54:15,056 INFO L137 encePairwiseOnDemand]: 229/251 looper letters, 134 selfloop transitions, 33 changer transitions 0/350 dead transitions. [2022-11-21 16:54:15,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 350 transitions, 1393 flow [2022-11-21 16:54:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 16:54:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 16:54:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3703 transitions. [2022-11-21 16:54:15,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7376494023904383 [2022-11-21 16:54:15,066 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3703 transitions. [2022-11-21 16:54:15,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3703 transitions. [2022-11-21 16:54:15,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:15,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3703 transitions. [2022-11-21 16:54:15,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 185.15) internal successors, (3703), 20 states have internal predecessors, (3703), 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) [2022-11-21 16:54:15,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 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) [2022-11-21 16:54:15,086 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 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) [2022-11-21 16:54:15,086 INFO L175 Difference]: Start difference. First operand has 276 places, 283 transitions, 886 flow. Second operand 20 states and 3703 transitions. [2022-11-21 16:54:15,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 350 transitions, 1393 flow [2022-11-21 16:54:15,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 350 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:54:15,138 INFO L231 Difference]: Finished difference. Result has 299 places, 293 transitions, 1029 flow [2022-11-21 16:54:15,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1029, PETRI_PLACES=299, PETRI_TRANSITIONS=293} [2022-11-21 16:54:15,142 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 66 predicate places. [2022-11-21 16:54:15,143 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 293 transitions, 1029 flow [2022-11-21 16:54:15,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 180.05555555555554) internal successors, (3241), 18 states have internal predecessors, (3241), 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) [2022-11-21 16:54:15,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:15,144 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:15,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:54:15,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:15,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:15,145 INFO L85 PathProgramCache]: Analyzing trace with hash -531483381, now seen corresponding path program 1 times [2022-11-21 16:54:15,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:15,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232185733] [2022-11-21 16:54:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:16,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232185733] [2022-11-21 16:54:16,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232185733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:16,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:16,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:54:16,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508925323] [2022-11-21 16:54:16,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:16,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:54:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:16,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:54:16,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:54:16,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 251 [2022-11-21 16:54:16,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 293 transitions, 1029 flow. Second operand has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 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) [2022-11-21 16:54:16,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:16,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 251 [2022-11-21 16:54:16,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:22,698 INFO L130 PetriNetUnfolder]: 8302/29747 cut-off events. [2022-11-21 16:54:22,698 INFO L131 PetriNetUnfolder]: For 7574/7694 co-relation queries the response was YES. [2022-11-21 16:54:22,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53820 conditions, 29747 events. 8302/29747 cut-off events. For 7574/7694 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 371618 event pairs, 1594 based on Foata normal form. 299/27840 useless extension candidates. Maximal degree in co-relation 53688. Up to 8324 conditions per place. [2022-11-21 16:54:22,926 INFO L137 encePairwiseOnDemand]: 228/251 looper letters, 215 selfloop transitions, 59 changer transitions 0/450 dead transitions. [2022-11-21 16:54:22,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 450 transitions, 2033 flow [2022-11-21 16:54:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 16:54:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-21 16:54:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3783 transitions. [2022-11-21 16:54:22,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7177006260671599 [2022-11-21 16:54:22,937 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3783 transitions. [2022-11-21 16:54:22,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3783 transitions. [2022-11-21 16:54:22,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:22,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3783 transitions. [2022-11-21 16:54:22,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 180.14285714285714) internal successors, (3783), 21 states have internal predecessors, (3783), 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) [2022-11-21 16:54:22,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 251.0) internal successors, (5522), 22 states have internal predecessors, (5522), 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) [2022-11-21 16:54:22,959 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 251.0) internal successors, (5522), 22 states have internal predecessors, (5522), 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) [2022-11-21 16:54:22,959 INFO L175 Difference]: Start difference. First operand has 299 places, 293 transitions, 1029 flow. Second operand 21 states and 3783 transitions. [2022-11-21 16:54:22,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 450 transitions, 2033 flow [2022-11-21 16:54:23,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 450 transitions, 2001 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-21 16:54:23,144 INFO L231 Difference]: Finished difference. Result has 314 places, 317 transitions, 1335 flow [2022-11-21 16:54:23,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1335, PETRI_PLACES=314, PETRI_TRANSITIONS=317} [2022-11-21 16:54:23,146 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 81 predicate places. [2022-11-21 16:54:23,146 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 317 transitions, 1335 flow [2022-11-21 16:54:23,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 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) [2022-11-21 16:54:23,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:23,147 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:23,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:54:23,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:23,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:23,148 INFO L85 PathProgramCache]: Analyzing trace with hash 324229669, now seen corresponding path program 2 times [2022-11-21 16:54:23,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:23,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117183077] [2022-11-21 16:54:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:23,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:24,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:24,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117183077] [2022-11-21 16:54:24,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117183077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:24,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:24,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 16:54:24,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957985549] [2022-11-21 16:54:24,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:24,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:54:24,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:24,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:54:24,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:54:24,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 251 [2022-11-21 16:54:24,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 317 transitions, 1335 flow. Second operand has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 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) [2022-11-21 16:54:24,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:24,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 251 [2022-11-21 16:54:24,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:31,487 INFO L130 PetriNetUnfolder]: 8914/31378 cut-off events. [2022-11-21 16:54:31,487 INFO L131 PetriNetUnfolder]: For 16560/16746 co-relation queries the response was YES. [2022-11-21 16:54:31,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60192 conditions, 31378 events. 8914/31378 cut-off events. For 16560/16746 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 392864 event pairs, 1162 based on Foata normal form. 361/29355 useless extension candidates. Maximal degree in co-relation 60052. Up to 6856 conditions per place. [2022-11-21 16:54:31,772 INFO L137 encePairwiseOnDemand]: 230/251 looper letters, 194 selfloop transitions, 64 changer transitions 0/434 dead transitions. [2022-11-21 16:54:31,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 434 transitions, 2170 flow [2022-11-21 16:54:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:54:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:54:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3251 transitions. [2022-11-21 16:54:31,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7195661797255423 [2022-11-21 16:54:31,785 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3251 transitions. [2022-11-21 16:54:31,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3251 transitions. [2022-11-21 16:54:31,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:31,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3251 transitions. [2022-11-21 16:54:31,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 180.61111111111111) internal successors, (3251), 18 states have internal predecessors, (3251), 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) [2022-11-21 16:54:31,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 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) [2022-11-21 16:54:31,804 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 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) [2022-11-21 16:54:31,805 INFO L175 Difference]: Start difference. First operand has 314 places, 317 transitions, 1335 flow. Second operand 18 states and 3251 transitions. [2022-11-21 16:54:31,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 434 transitions, 2170 flow [2022-11-21 16:54:32,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 434 transitions, 2125 flow, removed 13 selfloop flow, removed 9 redundant places. [2022-11-21 16:54:32,081 INFO L231 Difference]: Finished difference. Result has 326 places, 325 transitions, 1548 flow [2022-11-21 16:54:32,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1548, PETRI_PLACES=326, PETRI_TRANSITIONS=325} [2022-11-21 16:54:32,086 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 93 predicate places. [2022-11-21 16:54:32,086 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 325 transitions, 1548 flow [2022-11-21 16:54:32,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 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) [2022-11-21 16:54:32,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:32,088 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:32,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:54:32,088 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:32,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:32,089 INFO L85 PathProgramCache]: Analyzing trace with hash 99264505, now seen corresponding path program 1 times [2022-11-21 16:54:32,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:32,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069908869] [2022-11-21 16:54:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:32,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:32,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069908869] [2022-11-21 16:54:32,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069908869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:32,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:32,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:54:32,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733207481] [2022-11-21 16:54:32,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:32,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:54:32,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:32,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:54:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:54:32,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 251 [2022-11-21 16:54:32,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 325 transitions, 1548 flow. Second operand has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 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) [2022-11-21 16:54:32,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:32,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 251 [2022-11-21 16:54:32,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:33,683 INFO L130 PetriNetUnfolder]: 465/7417 cut-off events. [2022-11-21 16:54:33,683 INFO L131 PetriNetUnfolder]: For 1975/2365 co-relation queries the response was YES. [2022-11-21 16:54:33,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10234 conditions, 7417 events. 465/7417 cut-off events. For 1975/2365 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 84358 event pairs, 23 based on Foata normal form. 44/6806 useless extension candidates. Maximal degree in co-relation 10168. Up to 227 conditions per place. [2022-11-21 16:54:33,747 INFO L137 encePairwiseOnDemand]: 244/251 looper letters, 21 selfloop transitions, 4 changer transitions 0/335 dead transitions. [2022-11-21 16:54:33,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 335 transitions, 1624 flow [2022-11-21 16:54:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:54:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:54:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2022-11-21 16:54:33,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9306772908366534 [2022-11-21 16:54:33,750 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2022-11-21 16:54:33,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2022-11-21 16:54:33,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:33,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2022-11-21 16:54:33,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 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) [2022-11-21 16:54:33,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:33,756 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:33,756 INFO L175 Difference]: Start difference. First operand has 326 places, 325 transitions, 1548 flow. Second operand 5 states and 1168 transitions. [2022-11-21 16:54:33,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 335 transitions, 1624 flow [2022-11-21 16:54:33,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 335 transitions, 1578 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-21 16:54:33,779 INFO L231 Difference]: Finished difference. Result has 323 places, 328 transitions, 1534 flow [2022-11-21 16:54:33,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1534, PETRI_PLACES=323, PETRI_TRANSITIONS=328} [2022-11-21 16:54:33,781 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 90 predicate places. [2022-11-21 16:54:33,781 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 328 transitions, 1534 flow [2022-11-21 16:54:33,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 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) [2022-11-21 16:54:33,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:33,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:33,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:54:33,782 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash -738274639, now seen corresponding path program 1 times [2022-11-21 16:54:33,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:33,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967507582] [2022-11-21 16:54:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:33,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967507582] [2022-11-21 16:54:33,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967507582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:33,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:33,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:54:33,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939426442] [2022-11-21 16:54:33,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:33,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:54:33,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:33,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:54:33,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:54:33,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 251 [2022-11-21 16:54:33,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 328 transitions, 1534 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2022-11-21 16:54:33,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:33,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 251 [2022-11-21 16:54:33,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:34,107 INFO L130 PetriNetUnfolder]: 49/974 cut-off events. [2022-11-21 16:54:34,107 INFO L131 PetriNetUnfolder]: For 392/393 co-relation queries the response was YES. [2022-11-21 16:54:34,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 974 events. 49/974 cut-off events. For 392/393 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4469 event pairs, 2 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 1505. Up to 22 conditions per place. [2022-11-21 16:54:34,110 INFO L137 encePairwiseOnDemand]: 247/251 looper letters, 7 selfloop transitions, 2 changer transitions 5/295 dead transitions. [2022-11-21 16:54:34,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 295 transitions, 1247 flow [2022-11-21 16:54:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:54:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:54:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2022-11-21 16:54:34,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.949535192563081 [2022-11-21 16:54:34,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2022-11-21 16:54:34,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2022-11-21 16:54:34,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:34,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2022-11-21 16:54:34,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 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) [2022-11-21 16:54:34,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 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) [2022-11-21 16:54:34,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 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) [2022-11-21 16:54:34,119 INFO L175 Difference]: Start difference. First operand has 323 places, 328 transitions, 1534 flow. Second operand 3 states and 715 transitions. [2022-11-21 16:54:34,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 295 transitions, 1247 flow [2022-11-21 16:54:34,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 295 transitions, 1222 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-21 16:54:34,131 INFO L231 Difference]: Finished difference. Result has 318 places, 289 transitions, 1191 flow [2022-11-21 16:54:34,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1191, PETRI_PLACES=318, PETRI_TRANSITIONS=289} [2022-11-21 16:54:34,132 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 85 predicate places. [2022-11-21 16:54:34,133 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 289 transitions, 1191 flow [2022-11-21 16:54:34,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2022-11-21 16:54:34,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:34,134 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:34,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:54:34,134 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:34,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1781137955, now seen corresponding path program 1 times [2022-11-21 16:54:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:34,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992979632] [2022-11-21 16:54:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:35,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:35,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992979632] [2022-11-21 16:54:35,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992979632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:35,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:35,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-21 16:54:35,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388974479] [2022-11-21 16:54:35,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:35,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 16:54:35,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:35,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 16:54:35,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:54:35,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 251 [2022-11-21 16:54:35,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 289 transitions, 1191 flow. Second operand has 17 states, 17 states have (on average 183.64705882352942) internal successors, (3122), 17 states have internal predecessors, (3122), 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) [2022-11-21 16:54:35,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:35,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 251 [2022-11-21 16:54:35,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:36,672 INFO L130 PetriNetUnfolder]: 331/2018 cut-off events. [2022-11-21 16:54:36,673 INFO L131 PetriNetUnfolder]: For 1029/1034 co-relation queries the response was YES. [2022-11-21 16:54:36,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3831 conditions, 2018 events. 331/2018 cut-off events. For 1029/1034 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12789 event pairs, 237 based on Foata normal form. 3/1899 useless extension candidates. Maximal degree in co-relation 3698. Up to 641 conditions per place. [2022-11-21 16:54:36,686 INFO L137 encePairwiseOnDemand]: 234/251 looper letters, 77 selfloop transitions, 30 changer transitions 0/297 dead transitions. [2022-11-21 16:54:36,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 297 transitions, 1419 flow [2022-11-21 16:54:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:54:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:54:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2799 transitions. [2022-11-21 16:54:36,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7434262948207171 [2022-11-21 16:54:36,693 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2799 transitions. [2022-11-21 16:54:36,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2799 transitions. [2022-11-21 16:54:36,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:36,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2799 transitions. [2022-11-21 16:54:36,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 186.6) internal successors, (2799), 15 states have internal predecessors, (2799), 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) [2022-11-21 16:54:36,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 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) [2022-11-21 16:54:36,710 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 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) [2022-11-21 16:54:36,711 INFO L175 Difference]: Start difference. First operand has 318 places, 289 transitions, 1191 flow. Second operand 15 states and 2799 transitions. [2022-11-21 16:54:36,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 297 transitions, 1419 flow [2022-11-21 16:54:36,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 297 transitions, 1415 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:54:36,726 INFO L231 Difference]: Finished difference. Result has 332 places, 292 transitions, 1277 flow [2022-11-21 16:54:36,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1277, PETRI_PLACES=332, PETRI_TRANSITIONS=292} [2022-11-21 16:54:36,728 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 99 predicate places. [2022-11-21 16:54:36,728 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 292 transitions, 1277 flow [2022-11-21 16:54:36,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 183.64705882352942) internal successors, (3122), 17 states have internal predecessors, (3122), 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) [2022-11-21 16:54:36,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:36,730 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:36,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:54:36,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:36,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1319605564, now seen corresponding path program 1 times [2022-11-21 16:54:36,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:36,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672811470] [2022-11-21 16:54:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:36,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:38,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:38,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672811470] [2022-11-21 16:54:38,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672811470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:38,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:38,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 16:54:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41092833] [2022-11-21 16:54:38,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:38,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:54:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:54:38,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:54:38,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 251 [2022-11-21 16:54:38,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 292 transitions, 1277 flow. Second operand has 19 states, 19 states have (on average 174.78947368421052) internal successors, (3321), 19 states have internal predecessors, (3321), 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) [2022-11-21 16:54:38,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:38,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 251 [2022-11-21 16:54:38,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:54:40,302 INFO L130 PetriNetUnfolder]: 317/1976 cut-off events. [2022-11-21 16:54:40,302 INFO L131 PetriNetUnfolder]: For 1113/1118 co-relation queries the response was YES. [2022-11-21 16:54:40,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 1976 events. 317/1976 cut-off events. For 1113/1118 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12496 event pairs, 109 based on Foata normal form. 7/1874 useless extension candidates. Maximal degree in co-relation 3677. Up to 477 conditions per place. [2022-11-21 16:54:40,314 INFO L137 encePairwiseOnDemand]: 235/251 looper letters, 95 selfloop transitions, 26 changer transitions 0/304 dead transitions. [2022-11-21 16:54:40,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 304 transitions, 1536 flow [2022-11-21 16:54:40,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:54:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:54:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2676 transitions. [2022-11-21 16:54:40,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7107569721115538 [2022-11-21 16:54:40,320 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2676 transitions. [2022-11-21 16:54:40,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2676 transitions. [2022-11-21 16:54:40,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:54:40,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2676 transitions. [2022-11-21 16:54:40,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 178.4) internal successors, (2676), 15 states have internal predecessors, (2676), 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) [2022-11-21 16:54:40,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 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) [2022-11-21 16:54:40,336 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 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) [2022-11-21 16:54:40,336 INFO L175 Difference]: Start difference. First operand has 332 places, 292 transitions, 1277 flow. Second operand 15 states and 2676 transitions. [2022-11-21 16:54:40,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 304 transitions, 1536 flow [2022-11-21 16:54:40,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 304 transitions, 1502 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-21 16:54:40,352 INFO L231 Difference]: Finished difference. Result has 337 places, 292 transitions, 1305 flow [2022-11-21 16:54:40,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1305, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2022-11-21 16:54:40,353 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 104 predicate places. [2022-11-21 16:54:40,353 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 1305 flow [2022-11-21 16:54:40,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 174.78947368421052) internal successors, (3321), 19 states have internal predecessors, (3321), 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) [2022-11-21 16:54:40,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:40,355 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:40,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:54:40,356 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-21 16:54:40,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:40,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1123022933, now seen corresponding path program 1 times [2022-11-21 16:54:40,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:40,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621760108] [2022-11-21 16:54:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:40,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:43,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:43,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621760108] [2022-11-21 16:54:43,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621760108] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:54:43,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191437024] [2022-11-21 16:54:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:43,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:54:43,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:54:43,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:54:43,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c49ee19-1454-4f83-b7a7-768802b3b955/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:54:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:44,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-21 16:54:44,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:54:44,460 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:54:44,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:54:44,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 16:54:44,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-21 16:54:45,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-21 16:54:46,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:54:46,067 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 16:54:46,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 39 [2022-11-21 16:54:46,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:54:46,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:54:46,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2022-11-21 16:54:47,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 27 [2022-11-21 16:54:47,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:54:47,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-21 16:54:47,720 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-21 16:54:47,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 39 [2022-11-21 16:54:47,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-21 16:54:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:47,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:54:48,447 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_344 (Array Int Int))) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork1_enqueue_#t~post41#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647)) is different from false [2022-11-21 16:54:48,483 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_344 (Array Int Int))) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork1_enqueue_#t~mem40#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647)) is different from false [2022-11-21 16:54:48,499 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_344 (Array Int Int))) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse2 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (store .cse1 .cse2 (+ (select .cse1 .cse2) 1)))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647)) is different from false [2022-11-21 16:54:48,830 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse3 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse0 (select .cse2 .cse3))) (or (= .cse0 20) (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int))) (or (not (<= v_ArrVal_341 (+ |c_t1Thread1of1ForFork1_enqueue_#t~post38#1| 1))) (< (select (let ((.cse1 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse2 (+ 88 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_341) .cse3 (+ .cse0 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse1 (+ (* (select .cse1 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647)))))) is different from false [2022-11-21 16:54:49,086 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse4 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse0 (select .cse1 .cse4))) (or (= .cse0 20) (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int))) (let ((.cse2 (+ 88 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (or (< (+ (select .cse1 .cse2) 1) v_ArrVal_341) (< (select (let ((.cse3 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse1 .cse2 v_ArrVal_341) .cse4 (+ .cse0 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse3 (+ (* (select .cse3 (+ 84 |c_~#queue~0.offset|)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647))))))) is different from false [2022-11-21 16:54:49,154 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ (* 4 |c_t1Thread1of1ForFork1_enqueue_#t~mem36#1|) |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_338)) (.cse4 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse1 (+ 88 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse2 (select .cse0 .cse4))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_341) (= .cse2 20) (< (select (let ((.cse3 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse0 .cse1 v_ArrVal_341) .cse4 (+ .cse2 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse3 (+ |c_~#queue~0.offset| (* (select .cse3 (+ 84 |c_~#queue~0.offset|)) 4)) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647))))) is different from false [2022-11-21 16:54:49,223 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| Int)) (let ((.cse1 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|))) (or (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| (select .cse0 .cse1))) (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse2 (store .cse0 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| 4) |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_338))) (let ((.cse3 (+ 88 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse5 (select .cse2 .cse1))) (or (< (+ (select .cse2 .cse3) 1) v_ArrVal_341) (< (select (let ((.cse4 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse2 .cse3 v_ArrVal_341) .cse1 (+ .cse5 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse4 (+ |c_~#queue~0.offset| (* (select .cse4 (+ 84 |c_~#queue~0.offset|)) 4)) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647) (= .cse5 20)))))))) is different from false [2022-11-21 16:54:49,305 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse5 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_#in~q#1.base|))) (let ((.cse1 (store .cse5 (+ |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset| (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| 4)) v_ArrVal_338)) (.cse3 (+ |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset| 84))) (let ((.cse2 (+ 88 |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset|)) (.cse4 (select .cse1 .cse3))) (or (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_#in~q#1.base| (store (store .cse1 .cse2 v_ArrVal_341) .cse3 (+ .cse4 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* 4 (select .cse0 (+ 84 |c_~#queue~0.offset|)))) v_ArrVal_345)) (+ 88 |c_~#queue~0.offset|)) 2147483647) (< (+ 1 (select .cse1 .cse2)) v_ArrVal_341) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| (select .cse5 .cse3))) (= .cse4 20)))))) is different from false [2022-11-21 16:54:55,209 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_337 (Array Int Int)) (v_ArrVal_345 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int) (v_ArrVal_336 Int)) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base|) (+ 88 |c_ULTIMATE.start_init_~q#1.offset|) v_ArrVal_336)) |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_337))) (let ((.cse3 (select .cse6 |c_~#queue~0.base|))) (let ((.cse1 (store .cse3 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| 4) |c_~#queue~0.offset|) v_ArrVal_338)) (.cse4 (+ 84 |c_~#queue~0.offset|))) (let ((.cse0 (select .cse1 .cse4)) (.cse2 (+ 88 |c_~#queue~0.offset|))) (or (not (<= v_ArrVal_336 0)) (= 20 .cse0) (< (+ (select .cse1 .cse2) 1) v_ArrVal_341) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| (select .cse3 .cse4))) (< (select (let ((.cse5 (select (store (store .cse6 |c_~#queue~0.base| (store (store .cse1 .cse2 v_ArrVal_341) .cse4 (+ .cse0 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse5 (+ |c_~#queue~0.offset| (* (select .cse5 .cse4) 4)) v_ArrVal_345)) .cse2) 2147483647))))))) is different from false [2022-11-21 16:54:55,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:54:55,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 194 [2022-11-21 16:54:55,268 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:54:55,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 314 treesize of output 306 [2022-11-21 16:54:55,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 165 [2022-11-21 16:54:55,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 184 [2022-11-21 16:54:55,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-21 16:54:55,626 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:54:55,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 207 treesize of output 215 [2022-11-21 16:54:57,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:54:57,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 43 [2022-11-21 16:54:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-21 16:54:57,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191437024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:54:57,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:54:57,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 29] total 79 [2022-11-21 16:54:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756746000] [2022-11-21 16:54:57,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:54:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-21 16:54:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-21 16:54:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=4360, Unknown=31, NotChecked=1314, Total=6320 [2022-11-21 16:54:57,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 251 [2022-11-21 16:54:57,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 1305 flow. Second operand has 80 states, 80 states have (on average 160.1375) internal successors, (12811), 80 states have internal predecessors, (12811), 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) [2022-11-21 16:54:57,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:57,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 251 [2022-11-21 16:54:57,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:55:17,381 WARN L233 SmtUtils]: Spent 9.03s on a formula simplification. DAG size of input: 170 DAG size of output: 105 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:55:29,602 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 150 DAG size of output: 101 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:55:34,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:55:36,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:55:38,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:55:44,969 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 163 DAG size of output: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:55:47,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:55:56,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:55:58,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:56:02,637 INFO L130 PetriNetUnfolder]: 553/2591 cut-off events. [2022-11-21 16:56:02,637 INFO L131 PetriNetUnfolder]: For 2081/2085 co-relation queries the response was YES. [2022-11-21 16:56:02,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5807 conditions, 2591 events. 553/2591 cut-off events. For 2081/2085 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 17254 event pairs, 266 based on Foata normal form. 10/2490 useless extension candidates. Maximal degree in co-relation 5654. Up to 796 conditions per place. [2022-11-21 16:56:02,659 INFO L137 encePairwiseOnDemand]: 213/251 looper letters, 175 selfloop transitions, 120 changer transitions 0/446 dead transitions. [2022-11-21 16:56:02,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 446 transitions, 2729 flow [2022-11-21 16:56:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-21 16:56:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-11-21 16:56:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 9735 transitions. [2022-11-21 16:56:02,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.646414342629482 [2022-11-21 16:56:02,676 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 9735 transitions. [2022-11-21 16:56:02,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 9735 transitions. [2022-11-21 16:56:02,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:56:02,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 9735 transitions.