./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro --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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- 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-8393723 [2022-11-18 19:53:50,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:53:50,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:53:50,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:53:50,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:53:50,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:53:50,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:53:50,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:53:50,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:53:50,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:53:50,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:53:50,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:53:50,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:53:50,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:53:50,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:53:50,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:53:50,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:53:50,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:53:50,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:53:50,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:53:50,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:53:50,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:53:50,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:53:50,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:53:50,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:53:50,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:53:50,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:53:50,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:53:50,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:53:50,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:53:50,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:53:50,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:53:50,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:53:50,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:53:50,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:53:50,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:53:50,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:53:50,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:53:50,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:53:50,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:53:50,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:53:50,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:53:50,256 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:53:50,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:53:50,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:53:50,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:53:50,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:53:50,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:53:50,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:53:50,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:53:50,261 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:53:50,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:53:50,262 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:53:50,262 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:53:50,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:53:50,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:53:50,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:53:50,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:53:50,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:53:50,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:53:50,264 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:53:50,264 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:53:50,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:53:50,265 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:53:50,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:53:50,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:53:50,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:53:50,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:53:50,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:50,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:53:50,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:53:50,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:53:50,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:53:50,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:53:50,269 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:53:50,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:53:50,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:53:50,269 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_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2022-11-18 19:53:50,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:53:50,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:53:50,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:53:50,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:53:50,546 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:53:50,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-18 19:53:50,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/data/fab3e02c5/037b022a3a26442daae86393b0868cd8/FLAG8e7863316 [2022-11-18 19:53:51,279 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:53:51,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-11-18 19:53:51,292 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/data/fab3e02c5/037b022a3a26442daae86393b0868cd8/FLAG8e7863316 [2022-11-18 19:53:51,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/data/fab3e02c5/037b022a3a26442daae86393b0868cd8 [2022-11-18 19:53:51,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:53:51,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:53:51,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:51,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:53:51,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:53:51,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:51" (1/1) ... [2022-11-18 19:53:51,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3004ae31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:51, skipping insertion in model container [2022-11-18 19:53:51,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:51" (1/1) ... [2022-11-18 19:53:51,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:53:51,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:53:51,836 WARN L234 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_c6aefba0-61b6-4340-867b-048ba46d5feb/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-18 19:53:52,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:52,040 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:53:52,057 WARN L234 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_c6aefba0-61b6-4340-867b-048ba46d5feb/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-11-18 19:53:52,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:52,147 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:53:52,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52 WrapperNode [2022-11-18 19:53:52,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:52,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:52,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:53:52,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:53:52,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,208 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-18 19:53:52,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:52,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:53:52,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:53:52,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:53:52,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,233 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:53:52,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:53:52,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:53:52,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:53:52,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (1/1) ... [2022-11-18 19:53:52,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:52,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:53:52,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:53:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-18 19:53:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-18 19:53:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:53:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:53:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:53:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:53:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:53:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:53:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:53:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:53:52,317 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:53:52,501 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:53:52,503 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:53:52,857 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:53:52,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:53:52,871 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 19:53:52,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:52 BoogieIcfgContainer [2022-11-18 19:53:52,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:53:52,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:53:52,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:53:52,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:53:52,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:53:51" (1/3) ... [2022-11-18 19:53:52,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f7d71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:52, skipping insertion in model container [2022-11-18 19:53:52,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:52" (2/3) ... [2022-11-18 19:53:52,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f7d71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:52, skipping insertion in model container [2022-11-18 19:53:52,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:52" (3/3) ... [2022-11-18 19:53:52,886 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-11-18 19:53:52,896 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:53:52,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:53:52,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 19:53:52,907 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:53:53,000 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:53:53,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 259 flow [2022-11-18 19:53:53,149 INFO L130 PetriNetUnfolder]: 10/126 cut-off events. [2022-11-18 19:53:53,149 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:53:53,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 126 events. 10/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 225 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-18 19:53:53,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 127 transitions, 259 flow [2022-11-18 19:53:53,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 126 transitions, 255 flow [2022-11-18 19:53:53,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:53:53,179 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;@f41c60f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:53:53,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 19:53:53,212 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-18 19:53:53,213 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:53:53,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:53,215 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] [2022-11-18 19:53:53,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:53,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2124300518, now seen corresponding path program 1 times [2022-11-18 19:53:53,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:53,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291797953] [2022-11-18 19:53:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:53,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:53,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:53,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291797953] [2022-11-18 19:53:53,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291797953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:53,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:53,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:53,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466108898] [2022-11-18 19:53:53,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:53,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:53,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:53,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-18 19:53:53,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2022-11-18 19:53:53,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:53,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-18 19:53:53,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:53,992 INFO L130 PetriNetUnfolder]: 127/500 cut-off events. [2022-11-18 19:53:53,993 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:53:53,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 500 events. 127/500 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2382 event pairs, 44 based on Foata normal form. 51/450 useless extension candidates. Maximal degree in co-relation 692. Up to 190 conditions per place. [2022-11-18 19:53:54,003 INFO L137 encePairwiseOnDemand]: 113/127 looper letters, 36 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2022-11-18 19:53:54,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 135 transitions, 353 flow [2022-11-18 19:53:54,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-11-18 19:53:54,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2022-11-18 19:53:54,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-11-18 19:53:54,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-11-18 19:53:54,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:54,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-11-18 19:53:54,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:54,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-18 19:53:54,081 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-18 19:53:54,083 INFO L175 Difference]: Start difference. First operand has 120 places, 126 transitions, 255 flow. Second operand 5 states and 555 transitions. [2022-11-18 19:53:54,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 135 transitions, 353 flow [2022-11-18 19:53:54,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 135 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:54,092 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 270 flow [2022-11-18 19:53:54,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2022-11-18 19:53:54,097 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2022-11-18 19:53:54,098 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 270 flow [2022-11-18 19:53:54,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2022-11-18 19:53:54,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:54,099 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] [2022-11-18 19:53:54,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:53:54,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:54,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1339575174, now seen corresponding path program 1 times [2022-11-18 19:53:54,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:54,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329038701] [2022-11-18 19:53:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:54,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329038701] [2022-11-18 19:53:54,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329038701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:54,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:54,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:54,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72050149] [2022-11-18 19:53:54,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:54,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:54,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:54,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-18 19:53:54,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 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) [2022-11-18 19:53:54,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:54,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-18 19:53:54,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:54,491 INFO L130 PetriNetUnfolder]: 24/333 cut-off events. [2022-11-18 19:53:54,496 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 19:53:54,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 333 events. 24/333 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1032 event pairs, 5 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 354. Up to 20 conditions per place. [2022-11-18 19:53:54,501 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 15 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2022-11-18 19:53:54,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 322 flow [2022-11-18 19:53:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-11-18 19:53:54,503 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755905511811024 [2022-11-18 19:53:54,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-11-18 19:53:54,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-11-18 19:53:54,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:54,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-11-18 19:53:54,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 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) [2022-11-18 19:53:54,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-18 19:53:54,508 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-18 19:53:54,508 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 270 flow. Second operand 5 states and 556 transitions. [2022-11-18 19:53:54,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 322 flow [2022-11-18 19:53:54,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 126 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:54,515 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 298 flow [2022-11-18 19:53:54,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-11-18 19:53:54,516 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 7 predicate places. [2022-11-18 19:53:54,516 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 298 flow [2022-11-18 19:53:54,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 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) [2022-11-18 19:53:54,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:54,517 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] [2022-11-18 19:53:54,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:53:54,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:54,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1433621385, now seen corresponding path program 1 times [2022-11-18 19:53:54,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:54,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160249226] [2022-11-18 19:53:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:54,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:54,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160249226] [2022-11-18 19:53:54,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160249226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:54,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:54,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:54,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173448119] [2022-11-18 19:53:54,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:54,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:54,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:54,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:54,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:54,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2022-11-18 19:53:54,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2022-11-18 19:53:54,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:54,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2022-11-18 19:53:54,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:54,799 INFO L130 PetriNetUnfolder]: 11/215 cut-off events. [2022-11-18 19:53:54,799 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 19:53:54,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 215 events. 11/215 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 446 event pairs, 1 based on Foata normal form. 5/207 useless extension candidates. Maximal degree in co-relation 226. Up to 16 conditions per place. [2022-11-18 19:53:54,803 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 8 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2022-11-18 19:53:54,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 324 flow [2022-11-18 19:53:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:53:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2022-11-18 19:53:54,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2022-11-18 19:53:54,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2022-11-18 19:53:54,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2022-11-18 19:53:54,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:54,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2022-11-18 19:53:54,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2022-11-18 19:53:54,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2022-11-18 19:53:54,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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) [2022-11-18 19:53:54,809 INFO L175 Difference]: Start difference. First operand has 127 places, 122 transitions, 298 flow. Second operand 3 states and 333 transitions. [2022-11-18 19:53:54,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 324 flow [2022-11-18 19:53:54,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 122 transitions, 320 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:54,819 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 304 flow [2022-11-18 19:53:54,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2022-11-18 19:53:54,822 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 8 predicate places. [2022-11-18 19:53:54,822 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 304 flow [2022-11-18 19:53:54,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2022-11-18 19:53:54,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:54,823 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] [2022-11-18 19:53:54,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:53:54,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:54,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:54,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1352589206, now seen corresponding path program 1 times [2022-11-18 19:53:54,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:54,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055432221] [2022-11-18 19:53:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:54,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:55,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:55,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055432221] [2022-11-18 19:53:55,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055432221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:55,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:55,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:53:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151799454] [2022-11-18 19:53:55,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:55,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:55,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:55,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-18 19:53:55,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 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) [2022-11-18 19:53:55,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:55,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-18 19:53:55,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:55,189 INFO L130 PetriNetUnfolder]: 98/502 cut-off events. [2022-11-18 19:53:55,189 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-18 19:53:55,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 502 events. 98/502 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2258 event pairs, 20 based on Foata normal form. 3/457 useless extension candidates. Maximal degree in co-relation 774. Up to 81 conditions per place. [2022-11-18 19:53:55,194 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 51 selfloop transitions, 10 changer transitions 0/153 dead transitions. [2022-11-18 19:53:55,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 153 transitions, 498 flow [2022-11-18 19:53:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:53:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:53:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 799 transitions. [2022-11-18 19:53:55,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7864173228346457 [2022-11-18 19:53:55,197 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 799 transitions. [2022-11-18 19:53:55,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 799 transitions. [2022-11-18 19:53:55,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:55,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 799 transitions. [2022-11-18 19:53:55,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 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) [2022-11-18 19:53:55,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 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) [2022-11-18 19:53:55,202 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 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) [2022-11-18 19:53:55,203 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 304 flow. Second operand 8 states and 799 transitions. [2022-11-18 19:53:55,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 153 transitions, 498 flow [2022-11-18 19:53:55,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 153 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:55,208 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 362 flow [2022-11-18 19:53:55,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2022-11-18 19:53:55,209 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 17 predicate places. [2022-11-18 19:53:55,209 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 362 flow [2022-11-18 19:53:55,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 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) [2022-11-18 19:53:55,210 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:55,210 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] [2022-11-18 19:53:55,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:53:55,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2077127589, now seen corresponding path program 1 times [2022-11-18 19:53:55,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:55,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679552960] [2022-11-18 19:53:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:55,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:55,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679552960] [2022-11-18 19:53:55,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679552960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:55,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:55,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372840089] [2022-11-18 19:53:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:55,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:55,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-18 19:53:55,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 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) [2022-11-18 19:53:55,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:55,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-18 19:53:55,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:55,414 INFO L130 PetriNetUnfolder]: 36/474 cut-off events. [2022-11-18 19:53:55,414 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-11-18 19:53:55,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 474 events. 36/474 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1573 event pairs, 8 based on Foata normal form. 7/465 useless extension candidates. Maximal degree in co-relation 682. Up to 57 conditions per place. [2022-11-18 19:53:55,417 INFO L137 encePairwiseOnDemand]: 118/127 looper letters, 23 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2022-11-18 19:53:55,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 129 transitions, 426 flow [2022-11-18 19:53:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-18 19:53:55,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815748031496063 [2022-11-18 19:53:55,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-18 19:53:55,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-18 19:53:55,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:55,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-18 19:53:55,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 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) [2022-11-18 19:53:55,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-18 19:53:55,423 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-18 19:53:55,423 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 362 flow. Second operand 5 states and 518 transitions. [2022-11-18 19:53:55,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 129 transitions, 426 flow [2022-11-18 19:53:55,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:55,429 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 384 flow [2022-11-18 19:53:55,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2022-11-18 19:53:55,430 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 17 predicate places. [2022-11-18 19:53:55,430 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 384 flow [2022-11-18 19:53:55,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 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) [2022-11-18 19:53:55,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:55,431 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 19:53:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:53:55,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash -599517259, now seen corresponding path program 1 times [2022-11-18 19:53:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:55,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650602999] [2022-11-18 19:53:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:53:55,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:55,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650602999] [2022-11-18 19:53:55,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650602999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:55,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:55,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:55,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509301588] [2022-11-18 19:53:55,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:55,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:55,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:55,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:55,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-18 19:53:55,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 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) [2022-11-18 19:53:55,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:55,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-18 19:53:55,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:55,618 INFO L130 PetriNetUnfolder]: 53/474 cut-off events. [2022-11-18 19:53:55,618 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-11-18 19:53:55,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 474 events. 53/474 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1744 event pairs, 17 based on Foata normal form. 6/454 useless extension candidates. Maximal degree in co-relation 768. Up to 59 conditions per place. [2022-11-18 19:53:55,622 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 23 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2022-11-18 19:53:55,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 133 transitions, 485 flow [2022-11-18 19:53:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-18 19:53:55,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815748031496063 [2022-11-18 19:53:55,624 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-18 19:53:55,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-18 19:53:55,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:55,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-18 19:53:55,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 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) [2022-11-18 19:53:55,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-18 19:53:55,628 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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) [2022-11-18 19:53:55,628 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 384 flow. Second operand 5 states and 518 transitions. [2022-11-18 19:53:55,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 133 transitions, 485 flow [2022-11-18 19:53:55,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:53:55,633 INFO L231 Difference]: Finished difference. Result has 140 places, 128 transitions, 428 flow [2022-11-18 19:53:55,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2022-11-18 19:53:55,634 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 20 predicate places. [2022-11-18 19:53:55,634 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 428 flow [2022-11-18 19:53:55,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 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) [2022-11-18 19:53:55,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:55,635 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 19:53:55,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:53:55,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:55,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:55,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1405165579, now seen corresponding path program 1 times [2022-11-18 19:53:55,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:55,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200142927] [2022-11-18 19:53:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:55,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:55,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:55,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200142927] [2022-11-18 19:53:55,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200142927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:55,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322323718] [2022-11-18 19:53:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:55,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:55,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:55,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:55,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:53:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:55,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:55,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:55,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:55,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322323718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:55,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:55,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:53:55,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164426032] [2022-11-18 19:53:55,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:55,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:55,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:55,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:55,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:55,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-18 19:53:55,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 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) [2022-11-18 19:53:55,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:55,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-18 19:53:55,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:56,181 INFO L130 PetriNetUnfolder]: 55/521 cut-off events. [2022-11-18 19:53:56,181 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-11-18 19:53:56,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 521 events. 55/521 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1772 event pairs, 14 based on Foata normal form. 9/503 useless extension candidates. Maximal degree in co-relation 893. Up to 76 conditions per place. [2022-11-18 19:53:56,186 INFO L137 encePairwiseOnDemand]: 118/127 looper letters, 34 selfloop transitions, 10 changer transitions 2/143 dead transitions. [2022-11-18 19:53:56,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 143 transitions, 598 flow [2022-11-18 19:53:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:53:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 725 transitions. [2022-11-18 19:53:56,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8155230596175478 [2022-11-18 19:53:56,188 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 725 transitions. [2022-11-18 19:53:56,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 725 transitions. [2022-11-18 19:53:56,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:56,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 725 transitions. [2022-11-18 19:53:56,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 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) [2022-11-18 19:53:56,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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) [2022-11-18 19:53:56,193 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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) [2022-11-18 19:53:56,193 INFO L175 Difference]: Start difference. First operand has 140 places, 128 transitions, 428 flow. Second operand 7 states and 725 transitions. [2022-11-18 19:53:56,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 143 transitions, 598 flow [2022-11-18 19:53:56,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 143 transitions, 578 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-18 19:53:56,199 INFO L231 Difference]: Finished difference. Result has 147 places, 132 transitions, 492 flow [2022-11-18 19:53:56,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=147, PETRI_TRANSITIONS=132} [2022-11-18 19:53:56,200 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2022-11-18 19:53:56,200 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 132 transitions, 492 flow [2022-11-18 19:53:56,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 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) [2022-11-18 19:53:56,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:56,201 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2022-11-18 19:53:56,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:56,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:53:56,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:56,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2109417909, now seen corresponding path program 1 times [2022-11-18 19:53:56,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:56,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346037962] [2022-11-18 19:53:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:56,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:56,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:56,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346037962] [2022-11-18 19:53:56,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346037962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:56,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950336148] [2022-11-18 19:53:56,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:56,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:56,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:56,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:56,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:53:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:56,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:56,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:56,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950336148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:56,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:56,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:53:56,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792788252] [2022-11-18 19:53:56,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:56,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:53:56,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:56,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:53:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:53:56,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-18 19:53:56,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 132 transitions, 492 flow. Second operand has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 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) [2022-11-18 19:53:56,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:56,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-18 19:53:56,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:57,279 INFO L130 PetriNetUnfolder]: 47/884 cut-off events. [2022-11-18 19:53:57,280 INFO L131 PetriNetUnfolder]: For 669/669 co-relation queries the response was YES. [2022-11-18 19:53:57,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 884 events. 47/884 cut-off events. For 669/669 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3676 event pairs, 0 based on Foata normal form. 9/862 useless extension candidates. Maximal degree in co-relation 1550. Up to 51 conditions per place. [2022-11-18 19:53:57,286 INFO L137 encePairwiseOnDemand]: 120/127 looper letters, 23 selfloop transitions, 18 changer transitions 1/159 dead transitions. [2022-11-18 19:53:57,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 159 transitions, 652 flow [2022-11-18 19:53:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:53:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:53:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1971 transitions. [2022-11-18 19:53:57,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8622047244094488 [2022-11-18 19:53:57,292 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1971 transitions. [2022-11-18 19:53:57,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1971 transitions. [2022-11-18 19:53:57,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:57,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1971 transitions. [2022-11-18 19:53:57,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 109.5) internal successors, (1971), 18 states have internal predecessors, (1971), 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) [2022-11-18 19:53:57,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 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) [2022-11-18 19:53:57,306 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 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) [2022-11-18 19:53:57,307 INFO L175 Difference]: Start difference. First operand has 147 places, 132 transitions, 492 flow. Second operand 18 states and 1971 transitions. [2022-11-18 19:53:57,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 159 transitions, 652 flow [2022-11-18 19:53:57,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 159 transitions, 644 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:57,314 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 590 flow [2022-11-18 19:53:57,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=590, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2022-11-18 19:53:57,317 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 45 predicate places. [2022-11-18 19:53:57,317 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 590 flow [2022-11-18 19:53:57,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 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) [2022-11-18 19:53:57,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:57,319 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2022-11-18 19:53:57,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:57,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:57,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:57,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:57,525 INFO L85 PathProgramCache]: Analyzing trace with hash -967445431, now seen corresponding path program 1 times [2022-11-18 19:53:57,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:57,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518947015] [2022-11-18 19:53:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:57,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:57,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:57,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518947015] [2022-11-18 19:53:57,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518947015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:57,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58112815] [2022-11-18 19:53:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:57,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:57,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:57,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:57,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:53:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:57,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:57,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:57,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:57,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58112815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:57,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:53:57,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:53:57,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758398338] [2022-11-18 19:53:57,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:57,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:57,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:57,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:57,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:57,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-18 19:53:57,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 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) [2022-11-18 19:53:57,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:57,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-18 19:53:57,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:58,093 INFO L130 PetriNetUnfolder]: 47/871 cut-off events. [2022-11-18 19:53:58,093 INFO L131 PetriNetUnfolder]: For 756/756 co-relation queries the response was YES. [2022-11-18 19:53:58,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 871 events. 47/871 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3575 event pairs, 0 based on Foata normal form. 13/853 useless extension candidates. Maximal degree in co-relation 1582. Up to 56 conditions per place. [2022-11-18 19:53:58,100 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 15 selfloop transitions, 11 changer transitions 1/144 dead transitions. [2022-11-18 19:53:58,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 144 transitions, 627 flow [2022-11-18 19:53:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:53:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2022-11-18 19:53:58,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638920134983127 [2022-11-18 19:53:58,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2022-11-18 19:53:58,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2022-11-18 19:53:58,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:58,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2022-11-18 19:53:58,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 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) [2022-11-18 19:53:58,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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) [2022-11-18 19:53:58,109 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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) [2022-11-18 19:53:58,109 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 590 flow. Second operand 7 states and 768 transitions. [2022-11-18 19:53:58,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 144 transitions, 627 flow [2022-11-18 19:53:58,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 144 transitions, 595 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:58,117 INFO L231 Difference]: Finished difference. Result has 161 places, 140 transitions, 553 flow [2022-11-18 19:53:58,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=553, PETRI_PLACES=161, PETRI_TRANSITIONS=140} [2022-11-18 19:53:58,119 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 41 predicate places. [2022-11-18 19:53:58,119 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 140 transitions, 553 flow [2022-11-18 19:53:58,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 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) [2022-11-18 19:53:58,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:58,120 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 19:53:58,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:58,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:58,327 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:58,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash 683352357, now seen corresponding path program 1 times [2022-11-18 19:53:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:58,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133505500] [2022-11-18 19:53:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:58,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:58,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:58,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133505500] [2022-11-18 19:53:58,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133505500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:58,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677704701] [2022-11-18 19:53:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:58,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:58,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:58,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:58,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:53:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:58,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:53:58,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:58,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:58,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677704701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:58,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:58,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 19:53:58,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708074504] [2022-11-18 19:53:58,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:58,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:53:58,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:58,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:53:58,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:53:58,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-18 19:53:58,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 140 transitions, 553 flow. Second operand has 16 states, 16 states have (on average 95.3125) internal successors, (1525), 16 states have internal predecessors, (1525), 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) [2022-11-18 19:53:58,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:58,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-18 19:53:58,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:59,497 INFO L130 PetriNetUnfolder]: 268/1599 cut-off events. [2022-11-18 19:53:59,498 INFO L131 PetriNetUnfolder]: For 2060/2060 co-relation queries the response was YES. [2022-11-18 19:53:59,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 1599 events. 268/1599 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9718 event pairs, 46 based on Foata normal form. 42/1566 useless extension candidates. Maximal degree in co-relation 3345. Up to 132 conditions per place. [2022-11-18 19:53:59,508 INFO L137 encePairwiseOnDemand]: 114/127 looper letters, 63 selfloop transitions, 34 changer transitions 2/198 dead transitions. [2022-11-18 19:53:59,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 198 transitions, 1013 flow [2022-11-18 19:53:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:53:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 19:53:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2021 transitions. [2022-11-18 19:53:59,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7577802774653168 [2022-11-18 19:53:59,513 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2021 transitions. [2022-11-18 19:53:59,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2021 transitions. [2022-11-18 19:53:59,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:59,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2021 transitions. [2022-11-18 19:53:59,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.23809523809524) internal successors, (2021), 21 states have internal predecessors, (2021), 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) [2022-11-18 19:53:59,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 127.0) internal successors, (2794), 22 states have internal predecessors, (2794), 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) [2022-11-18 19:53:59,525 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 127.0) internal successors, (2794), 22 states have internal predecessors, (2794), 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) [2022-11-18 19:53:59,525 INFO L175 Difference]: Start difference. First operand has 161 places, 140 transitions, 553 flow. Second operand 21 states and 2021 transitions. [2022-11-18 19:53:59,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 198 transitions, 1013 flow [2022-11-18 19:53:59,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 198 transitions, 978 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-18 19:53:59,535 INFO L231 Difference]: Finished difference. Result has 179 places, 154 transitions, 743 flow [2022-11-18 19:53:59,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=743, PETRI_PLACES=179, PETRI_TRANSITIONS=154} [2022-11-18 19:53:59,536 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 59 predicate places. [2022-11-18 19:53:59,536 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 154 transitions, 743 flow [2022-11-18 19:53:59,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.3125) internal successors, (1525), 16 states have internal predecessors, (1525), 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) [2022-11-18 19:53:59,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:59,537 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 19:53:59,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:59,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:53:59,743 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:53:59,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:59,743 INFO L85 PathProgramCache]: Analyzing trace with hash -380133699, now seen corresponding path program 1 times [2022-11-18 19:53:59,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:59,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698704125] [2022-11-18 19:53:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:59,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:53:59,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:59,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698704125] [2022-11-18 19:53:59,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698704125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:59,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:59,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:53:59,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060599277] [2022-11-18 19:53:59,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:59,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:59,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:59,845 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-18 19:53:59,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 154 transitions, 743 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 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) [2022-11-18 19:53:59,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:59,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-18 19:53:59,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:00,284 INFO L130 PetriNetUnfolder]: 267/1654 cut-off events. [2022-11-18 19:54:00,284 INFO L131 PetriNetUnfolder]: For 3060/3060 co-relation queries the response was YES. [2022-11-18 19:54:00,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1654 events. 267/1654 cut-off events. For 3060/3060 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10305 event pairs, 40 based on Foata normal form. 34/1619 useless extension candidates. Maximal degree in co-relation 3640. Up to 233 conditions per place. [2022-11-18 19:54:00,297 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 37 selfloop transitions, 29 changer transitions 0/165 dead transitions. [2022-11-18 19:54:00,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 926 flow [2022-11-18 19:54:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:54:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:54:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 774 transitions. [2022-11-18 19:54:00,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7618110236220472 [2022-11-18 19:54:00,300 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 774 transitions. [2022-11-18 19:54:00,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 774 transitions. [2022-11-18 19:54:00,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:00,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 774 transitions. [2022-11-18 19:54:00,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 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) [2022-11-18 19:54:00,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 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) [2022-11-18 19:54:00,305 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 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) [2022-11-18 19:54:00,305 INFO L175 Difference]: Start difference. First operand has 179 places, 154 transitions, 743 flow. Second operand 8 states and 774 transitions. [2022-11-18 19:54:00,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 926 flow [2022-11-18 19:54:00,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 849 flow, removed 19 selfloop flow, removed 8 redundant places. [2022-11-18 19:54:00,321 INFO L231 Difference]: Finished difference. Result has 177 places, 155 transitions, 788 flow [2022-11-18 19:54:00,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=177, PETRI_TRANSITIONS=155} [2022-11-18 19:54:00,322 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 57 predicate places. [2022-11-18 19:54:00,322 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 155 transitions, 788 flow [2022-11-18 19:54:00,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 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) [2022-11-18 19:54:00,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:00,323 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 19:54:00,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:54:00,324 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:54:00,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:00,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1616612732, now seen corresponding path program 1 times [2022-11-18 19:54:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:00,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246009214] [2022-11-18 19:54:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:00,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:54:00,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:00,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246009214] [2022-11-18 19:54:00,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246009214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:00,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210092090] [2022-11-18 19:54:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:00,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:00,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:00,575 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:00,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:54:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:00,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:54:00,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:54:00,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:54:01,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210092090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:01,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:01,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 19:54:01,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140133102] [2022-11-18 19:54:01,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:01,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:54:01,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:54:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:54:01,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-18 19:54:01,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 155 transitions, 788 flow. Second operand has 18 states, 18 states have (on average 101.38888888888889) internal successors, (1825), 18 states have internal predecessors, (1825), 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) [2022-11-18 19:54:01,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:01,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-18 19:54:01,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:01,637 INFO L130 PetriNetUnfolder]: 136/1387 cut-off events. [2022-11-18 19:54:01,637 INFO L131 PetriNetUnfolder]: For 2865/2865 co-relation queries the response was YES. [2022-11-18 19:54:01,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 1387 events. 136/1387 cut-off events. For 2865/2865 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7774 event pairs, 60 based on Foata normal form. 4/1308 useless extension candidates. Maximal degree in co-relation 3016. Up to 212 conditions per place. [2022-11-18 19:54:01,648 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 81 selfloop transitions, 35 changer transitions 3/224 dead transitions. [2022-11-18 19:54:01,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 224 transitions, 1441 flow [2022-11-18 19:54:01,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:54:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-18 19:54:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2256 transitions. [2022-11-18 19:54:01,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.807444523979957 [2022-11-18 19:54:01,656 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2256 transitions. [2022-11-18 19:54:01,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2256 transitions. [2022-11-18 19:54:01,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:01,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2256 transitions. [2022-11-18 19:54:01,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 102.54545454545455) internal successors, (2256), 22 states have internal predecessors, (2256), 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) [2022-11-18 19:54:01,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 127.0) internal successors, (2921), 23 states have internal predecessors, (2921), 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) [2022-11-18 19:54:01,671 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 127.0) internal successors, (2921), 23 states have internal predecessors, (2921), 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) [2022-11-18 19:54:01,671 INFO L175 Difference]: Start difference. First operand has 177 places, 155 transitions, 788 flow. Second operand 22 states and 2256 transitions. [2022-11-18 19:54:01,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 224 transitions, 1441 flow [2022-11-18 19:54:01,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 224 transitions, 1380 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-18 19:54:01,685 INFO L231 Difference]: Finished difference. Result has 200 places, 174 transitions, 1045 flow [2022-11-18 19:54:01,686 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1045, PETRI_PLACES=200, PETRI_TRANSITIONS=174} [2022-11-18 19:54:01,687 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 80 predicate places. [2022-11-18 19:54:01,687 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 174 transitions, 1045 flow [2022-11-18 19:54:01,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.38888888888889) internal successors, (1825), 18 states have internal predecessors, (1825), 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) [2022-11-18 19:54:01,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:01,689 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:01,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:01,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:01,894 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:54:01,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1696385478, now seen corresponding path program 2 times [2022-11-18 19:54:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:01,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677748268] [2022-11-18 19:54:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:01,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:02,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:02,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677748268] [2022-11-18 19:54:02,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677748268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:02,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408001852] [2022-11-18 19:54:02,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:02,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:02,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:02,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:02,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:54:02,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:54:02,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:02,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:54:02,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:02,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:02,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408001852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:02,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:02,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-18 19:54:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456491332] [2022-11-18 19:54:02,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:02,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:54:02,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:54:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:54:02,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-18 19:54:02,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 174 transitions, 1045 flow. Second operand has 24 states, 24 states have (on average 109.66666666666667) internal successors, (2632), 24 states have internal predecessors, (2632), 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) [2022-11-18 19:54:02,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:02,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-18 19:54:02,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:03,914 INFO L130 PetriNetUnfolder]: 124/2566 cut-off events. [2022-11-18 19:54:03,914 INFO L131 PetriNetUnfolder]: For 5066/5066 co-relation queries the response was YES. [2022-11-18 19:54:03,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 2566 events. 124/2566 cut-off events. For 5066/5066 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 12439 event pairs, 0 based on Foata normal form. 33/2508 useless extension candidates. Maximal degree in co-relation 5425. Up to 117 conditions per place. [2022-11-18 19:54:03,934 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 47 selfloop transitions, 32 changer transitions 1/231 dead transitions. [2022-11-18 19:54:03,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 1397 flow [2022-11-18 19:54:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:54:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 19:54:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3510 transitions. [2022-11-18 19:54:03,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8636811023622047 [2022-11-18 19:54:03,941 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3510 transitions. [2022-11-18 19:54:03,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3510 transitions. [2022-11-18 19:54:03,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:03,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3510 transitions. [2022-11-18 19:54:03,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 109.6875) internal successors, (3510), 32 states have internal predecessors, (3510), 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) [2022-11-18 19:54:03,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 127.0) internal successors, (4191), 33 states have internal predecessors, (4191), 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) [2022-11-18 19:54:03,959 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 127.0) internal successors, (4191), 33 states have internal predecessors, (4191), 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) [2022-11-18 19:54:03,959 INFO L175 Difference]: Start difference. First operand has 200 places, 174 transitions, 1045 flow. Second operand 32 states and 3510 transitions. [2022-11-18 19:54:03,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 1397 flow [2022-11-18 19:54:03,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 1367 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-18 19:54:03,994 INFO L231 Difference]: Finished difference. Result has 235 places, 193 transitions, 1207 flow [2022-11-18 19:54:03,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1207, PETRI_PLACES=235, PETRI_TRANSITIONS=193} [2022-11-18 19:54:03,996 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 115 predicate places. [2022-11-18 19:54:03,996 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 193 transitions, 1207 flow [2022-11-18 19:54:04,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 109.66666666666667) internal successors, (2632), 24 states have internal predecessors, (2632), 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) [2022-11-18 19:54:04,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:04,006 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:04,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:04,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:54:04,212 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:54:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1626574958, now seen corresponding path program 2 times [2022-11-18 19:54:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:04,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350604811] [2022-11-18 19:54:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 455 proven. 532 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 19:54:04,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:04,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350604811] [2022-11-18 19:54:04,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350604811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:04,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739744722] [2022-11-18 19:54:04,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:04,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:04,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:04,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:04,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:54:05,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:54:05,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:05,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:54:05,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 80 proven. 877 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-18 19:54:05,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 80 proven. 877 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-18 19:54:06,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739744722] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:06,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:06,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-18 19:54:06,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858863686] [2022-11-18 19:54:06,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:06,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:54:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:54:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:54:06,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-11-18 19:54:06,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 193 transitions, 1207 flow. Second operand has 34 states, 34 states have (on average 101.5) internal successors, (3451), 34 states have internal predecessors, (3451), 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) [2022-11-18 19:54:06,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:06,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-11-18 19:54:06,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:07,991 INFO L130 PetriNetUnfolder]: 383/3751 cut-off events. [2022-11-18 19:54:07,992 INFO L131 PetriNetUnfolder]: For 9810/9810 co-relation queries the response was YES. [2022-11-18 19:54:08,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8920 conditions, 3751 events. 383/3751 cut-off events. For 9810/9810 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 23399 event pairs, 172 based on Foata normal form. 8/3537 useless extension candidates. Maximal degree in co-relation 8833. Up to 625 conditions per place. [2022-11-18 19:54:08,023 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 145 selfloop transitions, 67 changer transitions 3/339 dead transitions. [2022-11-18 19:54:08,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 339 transitions, 2583 flow [2022-11-18 19:54:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 19:54:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-18 19:54:08,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4708 transitions. [2022-11-18 19:54:08,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8058883943854844 [2022-11-18 19:54:08,034 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4708 transitions. [2022-11-18 19:54:08,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4708 transitions. [2022-11-18 19:54:08,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:08,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4708 transitions. [2022-11-18 19:54:08,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 102.34782608695652) internal successors, (4708), 46 states have internal predecessors, (4708), 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) [2022-11-18 19:54:08,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 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) [2022-11-18 19:54:08,062 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 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) [2022-11-18 19:54:08,062 INFO L175 Difference]: Start difference. First operand has 235 places, 193 transitions, 1207 flow. Second operand 46 states and 4708 transitions. [2022-11-18 19:54:08,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 339 transitions, 2583 flow [2022-11-18 19:54:08,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 339 transitions, 2545 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-18 19:54:08,103 INFO L231 Difference]: Finished difference. Result has 278 places, 226 transitions, 1770 flow [2022-11-18 19:54:08,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1770, PETRI_PLACES=278, PETRI_TRANSITIONS=226} [2022-11-18 19:54:08,104 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 158 predicate places. [2022-11-18 19:54:08,104 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 226 transitions, 1770 flow [2022-11-18 19:54:08,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 101.5) internal successors, (3451), 34 states have internal predecessors, (3451), 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) [2022-11-18 19:54:08,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:08,106 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:08,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:08,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:08,313 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:54:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:08,314 INFO L85 PathProgramCache]: Analyzing trace with hash 134675822, now seen corresponding path program 1 times [2022-11-18 19:54:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:08,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408467620] [2022-11-18 19:54:08,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:08,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 74 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2022-11-18 19:54:08,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:08,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408467620] [2022-11-18 19:54:08,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408467620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:08,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549013204] [2022-11-18 19:54:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:08,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:08,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:08,768 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:08,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:54:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:08,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:54:08,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 67 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-18 19:54:09,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 67 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-18 19:54:09,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549013204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:09,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:09,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2022-11-18 19:54:09,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792363907] [2022-11-18 19:54:09,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:09,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:54:09,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:54:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:54:09,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-18 19:54:09,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 226 transitions, 1770 flow. Second operand has 16 states, 16 states have (on average 96.0625) internal successors, (1537), 16 states have internal predecessors, (1537), 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) [2022-11-18 19:54:09,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:09,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-18 19:54:09,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:12,963 INFO L130 PetriNetUnfolder]: 1527/9547 cut-off events. [2022-11-18 19:54:12,963 INFO L131 PetriNetUnfolder]: For 29181/29181 co-relation queries the response was YES. [2022-11-18 19:54:13,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23775 conditions, 9547 events. 1527/9547 cut-off events. For 29181/29181 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 81518 event pairs, 445 based on Foata normal form. 81/9023 useless extension candidates. Maximal degree in co-relation 23677. Up to 763 conditions per place. [2022-11-18 19:54:13,047 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 147 selfloop transitions, 73 changer transitions 0/338 dead transitions. [2022-11-18 19:54:13,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 338 transitions, 2932 flow [2022-11-18 19:54:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:54:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 19:54:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2434 transitions. [2022-11-18 19:54:13,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7666141732283465 [2022-11-18 19:54:13,052 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2434 transitions. [2022-11-18 19:54:13,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2434 transitions. [2022-11-18 19:54:13,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:13,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2434 transitions. [2022-11-18 19:54:13,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 97.36) internal successors, (2434), 25 states have internal predecessors, (2434), 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) [2022-11-18 19:54:13,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 127.0) internal successors, (3302), 26 states have internal predecessors, (3302), 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) [2022-11-18 19:54:13,065 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 127.0) internal successors, (3302), 26 states have internal predecessors, (3302), 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) [2022-11-18 19:54:13,065 INFO L175 Difference]: Start difference. First operand has 278 places, 226 transitions, 1770 flow. Second operand 25 states and 2434 transitions. [2022-11-18 19:54:13,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 338 transitions, 2932 flow [2022-11-18 19:54:13,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 338 transitions, 2813 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-11-18 19:54:13,168 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 2278 flow [2022-11-18 19:54:13,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2278, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2022-11-18 19:54:13,169 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 171 predicate places. [2022-11-18 19:54:13,169 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 2278 flow [2022-11-18 19:54:13,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 96.0625) internal successors, (1537), 16 states have internal predecessors, (1537), 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) [2022-11-18 19:54:13,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:13,170 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:13,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:13,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:54:13,376 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:54:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1366271196, now seen corresponding path program 2 times [2022-11-18 19:54:13,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:13,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580789865] [2022-11-18 19:54:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:13,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 506 proven. 163 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-11-18 19:54:13,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:13,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580789865] [2022-11-18 19:54:13,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580789865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:13,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953529035] [2022-11-18 19:54:13,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:13,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:13,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:13,887 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:13,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:54:14,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:54:14,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:14,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:54:14,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 170 proven. 421 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-18 19:54:14,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 170 proven. 421 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-18 19:54:15,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953529035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:15,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:15,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-18 19:54:15,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748015771] [2022-11-18 19:54:15,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:15,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:54:15,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:15,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:54:15,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:54:15,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-18 19:54:15,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 2278 flow. Second operand has 24 states, 24 states have (on average 96.0) internal successors, (2304), 24 states have internal predecessors, (2304), 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) [2022-11-18 19:54:15,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:15,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-18 19:54:15,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:21,019 INFO L130 PetriNetUnfolder]: 2447/15886 cut-off events. [2022-11-18 19:54:21,019 INFO L131 PetriNetUnfolder]: For 55876/55876 co-relation queries the response was YES. [2022-11-18 19:54:21,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40960 conditions, 15886 events. 2447/15886 cut-off events. For 55876/55876 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 157807 event pairs, 506 based on Foata normal form. 72/14945 useless extension candidates. Maximal degree in co-relation 40854. Up to 1260 conditions per place. [2022-11-18 19:54:21,278 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 142 selfloop transitions, 155 changer transitions 1/416 dead transitions. [2022-11-18 19:54:21,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 416 transitions, 4082 flow [2022-11-18 19:54:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 19:54:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 19:54:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3477 transitions. [2022-11-18 19:54:21,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.760498687664042 [2022-11-18 19:54:21,286 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3477 transitions. [2022-11-18 19:54:21,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3477 transitions. [2022-11-18 19:54:21,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:21,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3477 transitions. [2022-11-18 19:54:21,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 96.58333333333333) internal successors, (3477), 36 states have internal predecessors, (3477), 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) [2022-11-18 19:54:21,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 127.0) internal successors, (4699), 37 states have internal predecessors, (4699), 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) [2022-11-18 19:54:21,306 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 127.0) internal successors, (4699), 37 states have internal predecessors, (4699), 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) [2022-11-18 19:54:21,307 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 2278 flow. Second operand 36 states and 3477 transitions. [2022-11-18 19:54:21,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 416 transitions, 4082 flow [2022-11-18 19:54:21,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 416 transitions, 3991 flow, removed 41 selfloop flow, removed 4 redundant places. [2022-11-18 19:54:21,519 INFO L231 Difference]: Finished difference. Result has 327 places, 306 transitions, 3284 flow [2022-11-18 19:54:21,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3284, PETRI_PLACES=327, PETRI_TRANSITIONS=306} [2022-11-18 19:54:21,520 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 207 predicate places. [2022-11-18 19:54:21,520 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 306 transitions, 3284 flow [2022-11-18 19:54:21,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 96.0) internal successors, (2304), 24 states have internal predecessors, (2304), 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) [2022-11-18 19:54:21,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:21,522 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:21,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:21,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:54:21,729 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:54:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:21,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1227933092, now seen corresponding path program 3 times [2022-11-18 19:54:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:21,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46333978] [2022-11-18 19:54:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:21,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 508 proven. 371 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-18 19:54:22,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:22,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46333978] [2022-11-18 19:54:22,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46333978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:22,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856994894] [2022-11-18 19:54:22,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:54:22,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:22,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:22,277 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:22,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:54:22,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-18 19:54:22,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:22,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:54:22,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 80 proven. 752 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-18 19:54:23,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 80 proven. 752 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-18 19:54:23,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856994894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:23,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:23,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 28 [2022-11-18 19:54:23,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840749150] [2022-11-18 19:54:23,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:23,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:54:23,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:23,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:54:23,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:54:23,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-18 19:54:23,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 306 transitions, 3284 flow. Second operand has 28 states, 28 states have (on average 95.92857142857143) internal successors, (2686), 28 states have internal predecessors, (2686), 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) [2022-11-18 19:54:23,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:23,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-18 19:54:23,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:31,278 INFO L130 PetriNetUnfolder]: 3022/19333 cut-off events. [2022-11-18 19:54:31,278 INFO L131 PetriNetUnfolder]: For 80168/80168 co-relation queries the response was YES. [2022-11-18 19:54:31,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52514 conditions, 19333 events. 3022/19333 cut-off events. For 80168/80168 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 205141 event pairs, 833 based on Foata normal form. 54/18111 useless extension candidates. Maximal degree in co-relation 52403. Up to 1560 conditions per place. [2022-11-18 19:54:31,588 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 237 selfloop transitions, 166 changer transitions 0/521 dead transitions. [2022-11-18 19:54:31,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 521 transitions, 5747 flow [2022-11-18 19:54:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 19:54:31,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-18 19:54:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4472 transitions. [2022-11-18 19:54:31,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.765491270112975 [2022-11-18 19:54:31,605 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4472 transitions. [2022-11-18 19:54:31,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4472 transitions. [2022-11-18 19:54:31,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:31,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4472 transitions. [2022-11-18 19:54:31,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 97.21739130434783) internal successors, (4472), 46 states have internal predecessors, (4472), 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) [2022-11-18 19:54:31,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 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) [2022-11-18 19:54:31,635 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 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) [2022-11-18 19:54:31,635 INFO L175 Difference]: Start difference. First operand has 327 places, 306 transitions, 3284 flow. Second operand 46 states and 4472 transitions. [2022-11-18 19:54:31,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 521 transitions, 5747 flow [2022-11-18 19:54:31,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 521 transitions, 5669 flow, removed 25 selfloop flow, removed 11 redundant places. [2022-11-18 19:54:31,954 INFO L231 Difference]: Finished difference. Result has 370 places, 343 transitions, 4321 flow [2022-11-18 19:54:31,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4321, PETRI_PLACES=370, PETRI_TRANSITIONS=343} [2022-11-18 19:54:31,956 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 250 predicate places. [2022-11-18 19:54:31,956 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 343 transitions, 4321 flow [2022-11-18 19:54:31,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 95.92857142857143) internal successors, (2686), 28 states have internal predecessors, (2686), 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) [2022-11-18 19:54:31,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:31,957 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:31,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:32,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:54:32,164 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:54:32,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:32,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1951333594, now seen corresponding path program 3 times [2022-11-18 19:54:32,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:32,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305063150] [2022-11-18 19:54:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:32,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:33,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:33,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305063150] [2022-11-18 19:54:33,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305063150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:33,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982509772] [2022-11-18 19:54:33,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:54:33,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:33,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:33,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:33,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:54:33,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-18 19:54:33,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:33,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:54:33,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:33,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:54:34,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982509772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:34,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:34,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-11-18 19:54:34,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034611923] [2022-11-18 19:54:34,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:34,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 19:54:34,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 19:54:34,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 19:54:34,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-11-18 19:54:34,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 343 transitions, 4321 flow. Second operand has 48 states, 48 states have (on average 109.83333333333333) internal successors, (5272), 48 states have internal predecessors, (5272), 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) [2022-11-18 19:54:34,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:34,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-11-18 19:54:34,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:49,298 INFO L130 PetriNetUnfolder]: 775/23917 cut-off events. [2022-11-18 19:54:49,298 INFO L131 PetriNetUnfolder]: For 123448/123448 co-relation queries the response was YES. [2022-11-18 19:54:49,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64777 conditions, 23917 events. 775/23917 cut-off events. For 123448/123448 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 204670 event pairs, 0 based on Foata normal form. 283/23237 useless extension candidates. Maximal degree in co-relation 64659. Up to 1159 conditions per place. [2022-11-18 19:54:49,491 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 94 selfloop transitions, 68 changer transitions 2/465 dead transitions. [2022-11-18 19:54:49,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 465 transitions, 5140 flow [2022-11-18 19:54:49,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-18 19:54:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-11-18 19:54:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 7452 transitions. [2022-11-18 19:54:49,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8628994905048634 [2022-11-18 19:54:49,501 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 7452 transitions. [2022-11-18 19:54:49,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 7452 transitions. [2022-11-18 19:54:49,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:49,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 7452 transitions. [2022-11-18 19:54:49,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 109.58823529411765) internal successors, (7452), 68 states have internal predecessors, (7452), 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) [2022-11-18 19:54:49,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 127.0) internal successors, (8763), 69 states have internal predecessors, (8763), 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) [2022-11-18 19:54:49,530 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 127.0) internal successors, (8763), 69 states have internal predecessors, (8763), 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) [2022-11-18 19:54:49,531 INFO L175 Difference]: Start difference. First operand has 370 places, 343 transitions, 4321 flow. Second operand 68 states and 7452 transitions. [2022-11-18 19:54:49,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 465 transitions, 5140 flow [2022-11-18 19:54:49,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 465 transitions, 5031 flow, removed 26 selfloop flow, removed 14 redundant places. [2022-11-18 19:54:49,938 INFO L231 Difference]: Finished difference. Result has 436 places, 380 transitions, 4629 flow [2022-11-18 19:54:49,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=4212, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=4629, PETRI_PLACES=436, PETRI_TRANSITIONS=380} [2022-11-18 19:54:49,939 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, 316 predicate places. [2022-11-18 19:54:49,939 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 380 transitions, 4629 flow [2022-11-18 19:54:49,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 109.83333333333333) internal successors, (5272), 48 states have internal predecessors, (5272), 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) [2022-11-18 19:54:49,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:49,941 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 15, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:49,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:50,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:54:50,147 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 19:54:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash 146017216, now seen corresponding path program 4 times [2022-11-18 19:54:50,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:50,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281306431] [2022-11-18 19:54:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:50,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2178 proven. 677 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2022-11-18 19:54:51,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:51,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281306431] [2022-11-18 19:54:51,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281306431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:51,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571291259] [2022-11-18 19:54:51,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:54:51,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:51,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:51,501 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:51,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6aefba0-61b6-4340-867b-048ba46d5feb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:54:51,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:54:51,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:51,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:54:51,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2269 proven. 799 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-18 19:54:52,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2269 proven. 799 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-18 19:54:52,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571291259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:52,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:54:52,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2022-11-18 19:54:52,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436454444] [2022-11-18 19:54:52,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:52,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:54:52,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:52,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:54:52,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:54:52,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-11-18 19:54:52,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 380 transitions, 4629 flow. Second operand has 36 states, 36 states have (on average 95.80555555555556) internal successors, (3449), 36 states have internal predecessors, (3449), 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) [2022-11-18 19:54:52,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:52,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-11-18 19:54:52,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand