./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8 --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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- 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-e04fb08 [2022-11-16 11:10:52,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:10:52,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:10:52,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:10:52,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:10:52,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:10:52,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:10:52,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:10:52,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:10:52,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:10:52,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:10:52,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:10:52,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:10:52,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:10:52,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:10:52,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:10:52,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:10:52,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:10:52,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:10:52,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:10:52,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:10:52,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:10:52,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:10:52,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:10:52,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:10:52,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:10:52,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:10:52,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:10:52,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:10:52,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:10:52,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:10:52,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:10:52,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:10:52,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:10:52,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:10:52,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:10:52,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:10:52,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:10:52,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:10:52,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:10:52,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:10:52,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:10:52,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:10:52,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:10:52,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:10:52,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:10:52,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:10:52,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:10:52,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:10:52,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:10:52,260 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:10:52,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:10:52,260 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:10:52,261 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:10:52,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:10:52,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:10:52,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:10:52,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:10:52,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:10:52,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:10:52,262 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:10:52,262 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:10:52,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:10:52,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:10:52,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:10:52,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:10:52,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:10:52,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:10:52,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:10:52,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:10:52,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:10:52,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:10:52,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:10:52,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:10:52,265 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:10:52,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:10:52,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:10:52,266 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_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2022-11-16 11:10:52,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:10:52,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:10:52,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:10:52,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:10:52,602 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:10:52,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-16 11:10:52,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/data/fd275904a/020453f0b01d4687af67df2b4c03a32d/FLAG40b38c212 [2022-11-16 11:10:53,183 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:10:53,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2022-11-16 11:10:53,195 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/data/fd275904a/020453f0b01d4687af67df2b4c03a32d/FLAG40b38c212 [2022-11-16 11:10:53,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/data/fd275904a/020453f0b01d4687af67df2b4c03a32d [2022-11-16 11:10:53,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:10:53,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:10:53,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:10:53,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:10:53,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:10:53,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:10:53" (1/1) ... [2022-11-16 11:10:53,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1234d910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:53, skipping insertion in model container [2022-11-16 11:10:53,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:10:53" (1/1) ... [2022-11-16 11:10:53,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:10:53,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:10:53,908 WARN L229 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_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-16 11:10:53,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:10:53,952 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:10:54,013 WARN L229 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_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2022-11-16 11:10:54,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:10:54,061 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:10:54,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54 WrapperNode [2022-11-16 11:10:54,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:10:54,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:10:54,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:10:54,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:10:54,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,128 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-11-16 11:10:54,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:10:54,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:10:54,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:10:54,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:10:54,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,158 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:10:54,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:10:54,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:10:54,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:10:54,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (1/1) ... [2022-11-16 11:10:54,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:10:54,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:54,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:10:54,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:10:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:10:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:10:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:10:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-11-16 11:10:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:10:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:10:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:10:54,248 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:10:54,373 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:10:54,375 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:10:54,721 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:10:54,729 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:10:54,729 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-16 11:10:54,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:10:54 BoogieIcfgContainer [2022-11-16 11:10:54,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:10:54,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:10:54,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:10:54,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:10:54,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:10:53" (1/3) ... [2022-11-16 11:10:54,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494dcfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:10:54, skipping insertion in model container [2022-11-16 11:10:54,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:54" (2/3) ... [2022-11-16 11:10:54,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494dcfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:10:54, skipping insertion in model container [2022-11-16 11:10:54,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:10:54" (3/3) ... [2022-11-16 11:10:54,744 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2022-11-16 11:10:54,755 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:10:54,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:10:54,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 11:10:54,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:10:54,856 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:10:54,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 124 transitions, 256 flow [2022-11-16 11:10:55,021 INFO L130 PetriNetUnfolder]: 21/163 cut-off events. [2022-11-16 11:10:55,021 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:10:55,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 21/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 404 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 84. Up to 6 conditions per place. [2022-11-16 11:10:55,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 124 transitions, 256 flow [2022-11-16 11:10:55,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 121 transitions, 250 flow [2022-11-16 11:10:55,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:10:55,072 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;@60f59347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:10:55,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 11:10:55,096 INFO L130 PetriNetUnfolder]: 4/66 cut-off events. [2022-11-16 11:10:55,097 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:10:55,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:55,098 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] [2022-11-16 11:10:55,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:10:55,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:55,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1058131991, now seen corresponding path program 1 times [2022-11-16 11:10:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:55,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802869129] [2022-11-16 11:10:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:55,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:55,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:55,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802869129] [2022-11-16 11:10:55,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802869129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:55,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:55,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:55,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383056517] [2022-11-16 11:10:55,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:55,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:55,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:55,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:55,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-11-16 11:10:55,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 121 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:55,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:55,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-11-16 11:10:55,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:55,864 INFO L130 PetriNetUnfolder]: 1/110 cut-off events. [2022-11-16 11:10:55,864 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-16 11:10:55,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 1/110 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 41/142 useless extension candidates. Maximal degree in co-relation 77. Up to 7 conditions per place. [2022-11-16 11:10:55,867 INFO L137 encePairwiseOnDemand]: 105/124 looper letters, 10 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2022-11-16 11:10:55,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 108 transitions, 252 flow [2022-11-16 11:10:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:10:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 533 transitions. [2022-11-16 11:10:55,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8596774193548387 [2022-11-16 11:10:55,896 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 533 transitions. [2022-11-16 11:10:55,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 533 transitions. [2022-11-16 11:10:55,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:55,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 533 transitions. [2022-11-16 11:10:55,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:55,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:55,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:55,923 INFO L175 Difference]: Start difference. First operand has 111 places, 121 transitions, 250 flow. Second operand 5 states and 533 transitions. [2022-11-16 11:10:55,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 108 transitions, 252 flow [2022-11-16 11:10:55,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 108 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:10:55,933 INFO L231 Difference]: Finished difference. Result has 113 places, 106 transitions, 232 flow [2022-11-16 11:10:55,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=113, PETRI_TRANSITIONS=106} [2022-11-16 11:10:55,942 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2022-11-16 11:10:55,943 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 106 transitions, 232 flow [2022-11-16 11:10:55,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:55,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:55,944 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] [2022-11-16 11:10:55,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:10:55,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:10:55,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:55,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1397684023, now seen corresponding path program 1 times [2022-11-16 11:10:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:55,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096575970] [2022-11-16 11:10:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:56,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:56,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096575970] [2022-11-16 11:10:56,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096575970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:56,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:56,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:56,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197682697] [2022-11-16 11:10:56,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:56,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:56,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:56,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:56,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:56,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 124 [2022-11-16 11:10:56,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 106 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:56,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 124 [2022-11-16 11:10:56,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:56,209 INFO L130 PetriNetUnfolder]: 8/194 cut-off events. [2022-11-16 11:10:56,209 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 11:10:56,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 194 events. 8/194 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 534 event pairs, 4 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 180. Up to 11 conditions per place. [2022-11-16 11:10:56,211 INFO L137 encePairwiseOnDemand]: 118/124 looper letters, 10 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2022-11-16 11:10:56,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 262 flow [2022-11-16 11:10:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:10:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2022-11-16 11:10:56,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161290322580645 [2022-11-16 11:10:56,214 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2022-11-16 11:10:56,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2022-11-16 11:10:56,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:56,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2022-11-16 11:10:56,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,218 INFO L175 Difference]: Start difference. First operand has 113 places, 106 transitions, 232 flow. Second operand 5 states and 506 transitions. [2022-11-16 11:10:56,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 262 flow [2022-11-16 11:10:56,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:10:56,226 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 228 flow [2022-11-16 11:10:56,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2022-11-16 11:10:56,228 INFO L288 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2022-11-16 11:10:56,228 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 228 flow [2022-11-16 11:10:56,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:56,229 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:10:56,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:10:56,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:10:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1929002665, now seen corresponding path program 1 times [2022-11-16 11:10:56,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:56,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420221210] [2022-11-16 11:10:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:56,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:56,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:56,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:56,294 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:10:56,296 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-16 11:10:56,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-16 11:10:56,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-16 11:10:56,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-16 11:10:56,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-16 11:10:56,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-16 11:10:56,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-16 11:10:56,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-16 11:10:56,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-16 11:10:56,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-16 11:10:56,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-16 11:10:56,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-16 11:10:56,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-16 11:10:56,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:10:56,302 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 11:10:56,305 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:10:56,305 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:10:56,357 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:10:56,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 162 transitions, 342 flow [2022-11-16 11:10:56,413 INFO L130 PetriNetUnfolder]: 37/277 cut-off events. [2022-11-16 11:10:56,413 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:10:56,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 277 events. 37/277 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 839 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2022-11-16 11:10:56,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 162 transitions, 342 flow [2022-11-16 11:10:56,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 162 transitions, 342 flow [2022-11-16 11:10:56,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:10:56,438 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;@60f59347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:10:56,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 11:10:56,448 INFO L130 PetriNetUnfolder]: 4/68 cut-off events. [2022-11-16 11:10:56,448 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:10:56,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:56,449 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] [2022-11-16 11:10:56,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:10:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1314132229, now seen corresponding path program 1 times [2022-11-16 11:10:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:56,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916511242] [2022-11-16 11:10:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:56,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:56,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:56,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916511242] [2022-11-16 11:10:56,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916511242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:56,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:56,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:56,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636025257] [2022-11-16 11:10:56,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:56,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:56,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:56,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:56,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-16 11:10:56,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 162 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:56,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-16 11:10:56,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:56,644 INFO L130 PetriNetUnfolder]: 4/222 cut-off events. [2022-11-16 11:10:56,645 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-16 11:10:56,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 222 events. 4/222 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 537 event pairs, 0 based on Foata normal form. 127/323 useless extension candidates. Maximal degree in co-relation 147. Up to 21 conditions per place. [2022-11-16 11:10:56,647 INFO L137 encePairwiseOnDemand]: 137/162 looper letters, 19 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2022-11-16 11:10:56,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 364 flow [2022-11-16 11:10:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:10:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2022-11-16 11:10:56,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-11-16 11:10:56,651 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2022-11-16 11:10:56,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2022-11-16 11:10:56,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:56,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2022-11-16 11:10:56,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,656 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,657 INFO L175 Difference]: Start difference. First operand has 146 places, 162 transitions, 342 flow. Second operand 5 states and 698 transitions. [2022-11-16 11:10:56,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 364 flow [2022-11-16 11:10:56,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:10:56,664 INFO L231 Difference]: Finished difference. Result has 152 places, 146 transitions, 336 flow [2022-11-16 11:10:56,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=152, PETRI_TRANSITIONS=146} [2022-11-16 11:10:56,669 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 6 predicate places. [2022-11-16 11:10:56,673 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 146 transitions, 336 flow [2022-11-16 11:10:56,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:56,674 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] [2022-11-16 11:10:56,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:10:56,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:10:56,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:56,675 INFO L85 PathProgramCache]: Analyzing trace with hash -169529811, now seen corresponding path program 1 times [2022-11-16 11:10:56,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:56,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750275400] [2022-11-16 11:10:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:56,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:56,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:56,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750275400] [2022-11-16 11:10:56,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750275400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:56,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:56,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:56,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541742922] [2022-11-16 11:10:56,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:56,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:56,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:56,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:56,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:56,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2022-11-16 11:10:56,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 146 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:56,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:56,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2022-11-16 11:10:56,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:57,031 INFO L130 PetriNetUnfolder]: 172/1015 cut-off events. [2022-11-16 11:10:57,032 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-16 11:10:57,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 1015 events. 172/1015 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7133 event pairs, 43 based on Foata normal form. 0/894 useless extension candidates. Maximal degree in co-relation 1350. Up to 207 conditions per place. [2022-11-16 11:10:57,043 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 36 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-16 11:10:57,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 169 transitions, 484 flow [2022-11-16 11:10:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:10:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2022-11-16 11:10:57,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2022-11-16 11:10:57,046 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2022-11-16 11:10:57,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2022-11-16 11:10:57,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:57,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2022-11-16 11:10:57,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,052 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,052 INFO L175 Difference]: Start difference. First operand has 152 places, 146 transitions, 336 flow. Second operand 5 states and 666 transitions. [2022-11-16 11:10:57,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 169 transitions, 484 flow [2022-11-16 11:10:57,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 169 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:10:57,057 INFO L231 Difference]: Finished difference. Result has 158 places, 151 transitions, 383 flow [2022-11-16 11:10:57,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=158, PETRI_TRANSITIONS=151} [2022-11-16 11:10:57,059 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 12 predicate places. [2022-11-16 11:10:57,059 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 151 transitions, 383 flow [2022-11-16 11:10:57,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:57,060 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:10:57,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:10:57,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:10:57,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash 561663769, now seen corresponding path program 1 times [2022-11-16 11:10:57,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:57,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250224303] [2022-11-16 11:10:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:57,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:10:57,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:57,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250224303] [2022-11-16 11:10:57,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250224303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:57,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:57,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:57,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335852684] [2022-11-16 11:10:57,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:57,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:57,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:57,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:57,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:57,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-16 11:10:57,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 151 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:57,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-16 11:10:57,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:57,220 INFO L130 PetriNetUnfolder]: 7/348 cut-off events. [2022-11-16 11:10:57,220 INFO L131 PetriNetUnfolder]: For 104/238 co-relation queries the response was YES. [2022-11-16 11:10:57,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 348 events. 7/348 cut-off events. For 104/238 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1224 event pairs, 0 based on Foata normal form. 16/328 useless extension candidates. Maximal degree in co-relation 295. Up to 16 conditions per place. [2022-11-16 11:10:57,224 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 11 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-16 11:10:57,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 151 transitions, 419 flow [2022-11-16 11:10:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:10:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2022-11-16 11:10:57,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8049382716049382 [2022-11-16 11:10:57,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 652 transitions. [2022-11-16 11:10:57,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 652 transitions. [2022-11-16 11:10:57,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:57,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 652 transitions. [2022-11-16 11:10:57,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,232 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,232 INFO L175 Difference]: Start difference. First operand has 158 places, 151 transitions, 383 flow. Second operand 5 states and 652 transitions. [2022-11-16 11:10:57,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 151 transitions, 419 flow [2022-11-16 11:10:57,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:10:57,237 INFO L231 Difference]: Finished difference. Result has 161 places, 151 transitions, 400 flow [2022-11-16 11:10:57,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2022-11-16 11:10:57,238 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 15 predicate places. [2022-11-16 11:10:57,238 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 400 flow [2022-11-16 11:10:57,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:57,239 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] [2022-11-16 11:10:57,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:10:57,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:10:57,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash 231708087, now seen corresponding path program 1 times [2022-11-16 11:10:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:57,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576154348] [2022-11-16 11:10:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:57,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:57,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:57,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576154348] [2022-11-16 11:10:57,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576154348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:57,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557274523] [2022-11-16 11:10:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:57,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:57,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:57,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:57,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:10:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:57,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:10:57,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:57,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:10:57,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557274523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:57,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:10:57,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:10:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598658926] [2022-11-16 11:10:57,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:57,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:10:57,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:57,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:10:57,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:10:57,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2022-11-16 11:10:57,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:57,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2022-11-16 11:10:57,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:57,721 INFO L130 PetriNetUnfolder]: 7/347 cut-off events. [2022-11-16 11:10:57,721 INFO L131 PetriNetUnfolder]: For 109/232 co-relation queries the response was YES. [2022-11-16 11:10:57,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 347 events. 7/347 cut-off events. For 109/232 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1216 event pairs, 0 based on Foata normal form. 9/320 useless extension candidates. Maximal degree in co-relation 296. Up to 19 conditions per place. [2022-11-16 11:10:57,725 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 15 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2022-11-16 11:10:57,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 153 transitions, 444 flow [2022-11-16 11:10:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:10:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:10:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 911 transitions. [2022-11-16 11:10:57,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8033509700176367 [2022-11-16 11:10:57,728 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 911 transitions. [2022-11-16 11:10:57,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 911 transitions. [2022-11-16 11:10:57,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:57,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 911 transitions. [2022-11-16 11:10:57,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,734 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,734 INFO L175 Difference]: Start difference. First operand has 161 places, 151 transitions, 400 flow. Second operand 7 states and 911 transitions. [2022-11-16 11:10:57,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 153 transitions, 444 flow [2022-11-16 11:10:57,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 153 transitions, 432 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:10:57,741 INFO L231 Difference]: Finished difference. Result has 163 places, 150 transitions, 396 flow [2022-11-16 11:10:57,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=163, PETRI_TRANSITIONS=150} [2022-11-16 11:10:57,743 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 17 predicate places. [2022-11-16 11:10:57,743 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 150 transitions, 396 flow [2022-11-16 11:10:57,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:57,743 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] [2022-11-16 11:10:57,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:10:57,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:57,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:10:57,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1222149656, now seen corresponding path program 1 times [2022-11-16 11:10:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:57,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108862433] [2022-11-16 11:10:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:58,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:58,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108862433] [2022-11-16 11:10:58,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108862433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:58,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:58,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:10:58,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116359088] [2022-11-16 11:10:58,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:58,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:10:58,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:58,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:10:58,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:58,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 162 [2022-11-16 11:10:58,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 150 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:58,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:58,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 162 [2022-11-16 11:10:58,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:58,501 INFO L130 PetriNetUnfolder]: 344/1721 cut-off events. [2022-11-16 11:10:58,501 INFO L131 PetriNetUnfolder]: For 316/322 co-relation queries the response was YES. [2022-11-16 11:10:58,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1721 events. 344/1721 cut-off events. For 316/322 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 13983 event pairs, 70 based on Foata normal form. 3/1515 useless extension candidates. Maximal degree in co-relation 1917. Up to 237 conditions per place. [2022-11-16 11:10:58,521 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 60 selfloop transitions, 19 changer transitions 0/200 dead transitions. [2022-11-16 11:10:58,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 200 transitions, 704 flow [2022-11-16 11:10:58,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:10:58,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:10:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2022-11-16 11:10:58,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7901234567901234 [2022-11-16 11:10:58,525 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2022-11-16 11:10:58,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2022-11-16 11:10:58,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:58,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2022-11-16 11:10:58,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:58,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:58,533 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:58,534 INFO L175 Difference]: Start difference. First operand has 163 places, 150 transitions, 396 flow. Second operand 9 states and 1152 transitions. [2022-11-16 11:10:58,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 200 transitions, 704 flow [2022-11-16 11:10:58,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 200 transitions, 693 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:10:58,540 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 511 flow [2022-11-16 11:10:58,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=511, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-11-16 11:10:58,541 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2022-11-16 11:10:58,541 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 511 flow [2022-11-16 11:10:58,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:58,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:58,542 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] [2022-11-16 11:10:58,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:10:58,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:10:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash 768066853, now seen corresponding path program 1 times [2022-11-16 11:10:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:58,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335119098] [2022-11-16 11:10:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:58,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:58,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:58,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335119098] [2022-11-16 11:10:58,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335119098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:58,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:58,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:10:58,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430969489] [2022-11-16 11:10:58,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:58,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:10:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:10:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:58,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 162 [2022-11-16 11:10:58,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 511 flow. Second operand has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:58,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:58,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 162 [2022-11-16 11:10:58,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:59,103 INFO L130 PetriNetUnfolder]: 321/1611 cut-off events. [2022-11-16 11:10:59,103 INFO L131 PetriNetUnfolder]: For 964/999 co-relation queries the response was YES. [2022-11-16 11:10:59,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 1611 events. 321/1611 cut-off events. For 964/999 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12859 event pairs, 77 based on Foata normal form. 42/1491 useless extension candidates. Maximal degree in co-relation 2149. Up to 272 conditions per place. [2022-11-16 11:10:59,120 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 65 selfloop transitions, 19 changer transitions 0/205 dead transitions. [2022-11-16 11:10:59,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 205 transitions, 846 flow [2022-11-16 11:10:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:10:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:10:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1154 transitions. [2022-11-16 11:10:59,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7914951989026063 [2022-11-16 11:10:59,124 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1154 transitions. [2022-11-16 11:10:59,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1154 transitions. [2022-11-16 11:10:59,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:59,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1154 transitions. [2022-11-16 11:10:59,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.22222222222223) internal successors, (1154), 9 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,131 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,131 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 511 flow. Second operand 9 states and 1154 transitions. [2022-11-16 11:10:59,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 205 transitions, 846 flow [2022-11-16 11:10:59,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 205 transitions, 805 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-16 11:10:59,140 INFO L231 Difference]: Finished difference. Result has 178 places, 166 transitions, 558 flow [2022-11-16 11:10:59,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=178, PETRI_TRANSITIONS=166} [2022-11-16 11:10:59,141 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 32 predicate places. [2022-11-16 11:10:59,141 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 166 transitions, 558 flow [2022-11-16 11:10:59,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:59,142 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:10:59,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:10:59,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:10:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:59,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1689231691, now seen corresponding path program 1 times [2022-11-16 11:10:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:59,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415894473] [2022-11-16 11:10:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:59,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:10:59,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:59,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415894473] [2022-11-16 11:10:59,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415894473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:59,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:59,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:59,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100432563] [2022-11-16 11:10:59,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:59,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:59,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:59,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:59,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:59,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2022-11-16 11:10:59,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 166 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:59,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2022-11-16 11:10:59,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:59,640 INFO L130 PetriNetUnfolder]: 270/1942 cut-off events. [2022-11-16 11:10:59,641 INFO L131 PetriNetUnfolder]: For 1155/1202 co-relation queries the response was YES. [2022-11-16 11:10:59,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1942 events. 270/1942 cut-off events. For 1155/1202 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16670 event pairs, 127 based on Foata normal form. 24/1761 useless extension candidates. Maximal degree in co-relation 2554. Up to 362 conditions per place. [2022-11-16 11:10:59,662 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 55 selfloop transitions, 7 changer transitions 0/192 dead transitions. [2022-11-16 11:10:59,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 192 transitions, 820 flow [2022-11-16 11:10:59,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:10:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2022-11-16 11:10:59,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197530864197531 [2022-11-16 11:10:59,665 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2022-11-16 11:10:59,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2022-11-16 11:10:59,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:59,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2022-11-16 11:10:59,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,669 INFO L175 Difference]: Start difference. First operand has 178 places, 166 transitions, 558 flow. Second operand 5 states and 664 transitions. [2022-11-16 11:10:59,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 192 transitions, 820 flow [2022-11-16 11:10:59,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 192 transitions, 792 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:10:59,677 INFO L231 Difference]: Finished difference. Result has 181 places, 169 transitions, 588 flow [2022-11-16 11:10:59,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2022-11-16 11:10:59,678 INFO L288 CegarLoopForPetriNet]: 146 programPoint places, 35 predicate places. [2022-11-16 11:10:59,678 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 588 flow [2022-11-16 11:10:59,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:59,679 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 11:10:59,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:10:59,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:10:59,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash -153088131, now seen corresponding path program 1 times [2022-11-16 11:10:59,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:59,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103730670] [2022-11-16 11:10:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:59,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:59,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:59,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:59,712 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:10:59,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-16 11:10:59,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-16 11:10:59,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-16 11:10:59,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-16 11:10:59,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-16 11:10:59,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-16 11:10:59,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-16 11:10:59,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-16 11:10:59,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-16 11:10:59,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-16 11:10:59,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-16 11:10:59,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-16 11:10:59,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-16 11:10:59,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-16 11:10:59,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-16 11:10:59,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-16 11:10:59,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-16 11:10:59,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:10:59,716 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:59,716 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:10:59,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:10:59,743 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:10:59,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 200 transitions, 430 flow [2022-11-16 11:10:59,801 INFO L130 PetriNetUnfolder]: 58/432 cut-off events. [2022-11-16 11:10:59,801 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:10:59,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 432 events. 58/432 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1479 event pairs, 1 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2022-11-16 11:10:59,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 200 transitions, 430 flow [2022-11-16 11:10:59,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 200 transitions, 430 flow [2022-11-16 11:10:59,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:10:59,812 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;@60f59347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:10:59,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 11:10:59,817 INFO L130 PetriNetUnfolder]: 4/68 cut-off events. [2022-11-16 11:10:59,818 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:10:59,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:59,818 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] [2022-11-16 11:10:59,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:10:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1705486305, now seen corresponding path program 1 times [2022-11-16 11:10:59,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:59,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443309613] [2022-11-16 11:10:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:59,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:59,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:59,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443309613] [2022-11-16 11:10:59,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443309613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:59,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:59,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035546940] [2022-11-16 11:10:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:59,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:59,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:59,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:59,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:59,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-16 11:10:59,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 200 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:59,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:59,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-16 11:10:59,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:00,016 INFO L130 PetriNetUnfolder]: 10/361 cut-off events. [2022-11-16 11:11:00,016 INFO L131 PetriNetUnfolder]: For 43/99 co-relation queries the response was YES. [2022-11-16 11:11:00,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 361 events. 10/361 cut-off events. For 43/99 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1149 event pairs, 1 based on Foata normal form. 308/622 useless extension candidates. Maximal degree in co-relation 269. Up to 40 conditions per place. [2022-11-16 11:11:00,020 INFO L137 encePairwiseOnDemand]: 169/200 looper letters, 21 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2022-11-16 11:11:00,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 182 transitions, 444 flow [2022-11-16 11:11:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:11:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:11:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2022-11-16 11:11:00,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.856 [2022-11-16 11:11:00,024 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2022-11-16 11:11:00,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2022-11-16 11:11:00,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:00,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2022-11-16 11:11:00,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:00,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:00,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:00,031 INFO L175 Difference]: Start difference. First operand has 179 places, 200 transitions, 430 flow. Second operand 5 states and 856 transitions. [2022-11-16 11:11:00,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 182 transitions, 444 flow [2022-11-16 11:11:00,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 182 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:11:00,036 INFO L231 Difference]: Finished difference. Result has 185 places, 178 transitions, 412 flow [2022-11-16 11:11:00,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=185, PETRI_TRANSITIONS=178} [2022-11-16 11:11:00,038 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 6 predicate places. [2022-11-16 11:11:00,039 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 178 transitions, 412 flow [2022-11-16 11:11:00,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:00,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:00,040 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] [2022-11-16 11:11:00,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:11:00,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:00,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash 161020753, now seen corresponding path program 1 times [2022-11-16 11:11:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:00,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360649665] [2022-11-16 11:11:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:00,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:00,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360649665] [2022-11-16 11:11:00,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360649665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:00,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:00,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:00,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082009526] [2022-11-16 11:11:00,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:00,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:00,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:00,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:00,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-16 11:11:00,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 178 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:00,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:00,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-16 11:11:00,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:01,619 INFO L130 PetriNetUnfolder]: 1861/7910 cut-off events. [2022-11-16 11:11:01,619 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2022-11-16 11:11:01,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11269 conditions, 7910 events. 1861/7910 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 86948 event pairs, 654 based on Foata normal form. 0/6973 useless extension candidates. Maximal degree in co-relation 11208. Up to 1995 conditions per place. [2022-11-16 11:11:01,713 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 52 selfloop transitions, 8 changer transitions 0/213 dead transitions. [2022-11-16 11:11:01,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 213 transitions, 644 flow [2022-11-16 11:11:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:11:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:11:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2022-11-16 11:11:01,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.814 [2022-11-16 11:11:01,716 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2022-11-16 11:11:01,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2022-11-16 11:11:01,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:01,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2022-11-16 11:11:01,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:01,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:01,722 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:01,722 INFO L175 Difference]: Start difference. First operand has 185 places, 178 transitions, 412 flow. Second operand 5 states and 814 transitions. [2022-11-16 11:11:01,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 213 transitions, 644 flow [2022-11-16 11:11:01,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 213 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:11:01,727 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 474 flow [2022-11-16 11:11:01,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2022-11-16 11:11:01,728 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 12 predicate places. [2022-11-16 11:11:01,729 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 474 flow [2022-11-16 11:11:01,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:01,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:01,729 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:11:01,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:11:01,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:01,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1829222815, now seen corresponding path program 1 times [2022-11-16 11:11:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:01,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881780484] [2022-11-16 11:11:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:01,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:11:01,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:01,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881780484] [2022-11-16 11:11:01,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881780484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:01,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:01,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:01,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18801045] [2022-11-16 11:11:01,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:01,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:01,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:01,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-16 11:11:01,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:01,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:01,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-16 11:11:01,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:02,044 INFO L130 PetriNetUnfolder]: 40/864 cut-off events. [2022-11-16 11:11:02,044 INFO L131 PetriNetUnfolder]: For 172/382 co-relation queries the response was YES. [2022-11-16 11:11:02,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 864 events. 40/864 cut-off events. For 172/382 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5228 event pairs, 7 based on Foata normal form. 41/791 useless extension candidates. Maximal degree in co-relation 777. Up to 52 conditions per place. [2022-11-16 11:11:02,059 INFO L137 encePairwiseOnDemand]: 194/200 looper letters, 13 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2022-11-16 11:11:02,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 185 transitions, 514 flow [2022-11-16 11:11:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:11:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:11:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 804 transitions. [2022-11-16 11:11:02,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.804 [2022-11-16 11:11:02,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 804 transitions. [2022-11-16 11:11:02,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 804 transitions. [2022-11-16 11:11:02,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:02,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 804 transitions. [2022-11-16 11:11:02,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,069 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 474 flow. Second operand 5 states and 804 transitions. [2022-11-16 11:11:02,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 185 transitions, 514 flow [2022-11-16 11:11:02,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 185 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:11:02,074 INFO L231 Difference]: Finished difference. Result has 194 places, 185 transitions, 490 flow [2022-11-16 11:11:02,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=194, PETRI_TRANSITIONS=185} [2022-11-16 11:11:02,075 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 15 predicate places. [2022-11-16 11:11:02,076 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 185 transitions, 490 flow [2022-11-16 11:11:02,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:02,077 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] [2022-11-16 11:11:02,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:11:02,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:02,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash -871331785, now seen corresponding path program 1 times [2022-11-16 11:11:02,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:02,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758886291] [2022-11-16 11:11:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:02,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:02,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:02,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758886291] [2022-11-16 11:11:02,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758886291] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:11:02,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492407389] [2022-11-16 11:11:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:02,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:02,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:02,171 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:02,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:11:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:02,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:11:02,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:02,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:11:02,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492407389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:02,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:11:02,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:11:02,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834796253] [2022-11-16 11:11:02,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:02,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:11:02,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:11:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:11:02,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 200 [2022-11-16 11:11:02,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 185 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:02,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 200 [2022-11-16 11:11:02,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:02,609 INFO L130 PetriNetUnfolder]: 40/862 cut-off events. [2022-11-16 11:11:02,610 INFO L131 PetriNetUnfolder]: For 186/379 co-relation queries the response was YES. [2022-11-16 11:11:02,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 862 events. 40/862 cut-off events. For 186/379 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5215 event pairs, 7 based on Foata normal form. 18/766 useless extension candidates. Maximal degree in co-relation 777. Up to 58 conditions per place. [2022-11-16 11:11:02,622 INFO L137 encePairwiseOnDemand]: 195/200 looper letters, 17 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2022-11-16 11:11:02,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 187 transitions, 538 flow [2022-11-16 11:11:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:11:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:11:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1123 transitions. [2022-11-16 11:11:02,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021428571428572 [2022-11-16 11:11:02,627 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1123 transitions. [2022-11-16 11:11:02,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1123 transitions. [2022-11-16 11:11:02,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:02,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1123 transitions. [2022-11-16 11:11:02,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.42857142857142) internal successors, (1123), 7 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,636 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 200.0) internal successors, (1600), 8 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,636 INFO L175 Difference]: Start difference. First operand has 194 places, 185 transitions, 490 flow. Second operand 7 states and 1123 transitions. [2022-11-16 11:11:02,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 187 transitions, 538 flow [2022-11-16 11:11:02,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 187 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:11:02,642 INFO L231 Difference]: Finished difference. Result has 196 places, 184 transitions, 486 flow [2022-11-16 11:11:02,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=196, PETRI_TRANSITIONS=184} [2022-11-16 11:11:02,643 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 17 predicate places. [2022-11-16 11:11:02,643 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 184 transitions, 486 flow [2022-11-16 11:11:02,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:02,644 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] [2022-11-16 11:11:02,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:02,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:02,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:02,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1123135060, now seen corresponding path program 1 times [2022-11-16 11:11:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:02,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059473782] [2022-11-16 11:11:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:02,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:02,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:02,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059473782] [2022-11-16 11:11:02,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059473782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:02,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:02,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:11:02,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736610368] [2022-11-16 11:11:02,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:02,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:11:02,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:02,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:11:02,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:11:02,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-16 11:11:02,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 184 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:02,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:02,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-16 11:11:02,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:05,901 INFO L130 PetriNetUnfolder]: 4008/14681 cut-off events. [2022-11-16 11:11:05,901 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-16 11:11:05,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23608 conditions, 14681 events. 4008/14681 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 175981 event pairs, 971 based on Foata normal form. 0/13074 useless extension candidates. Maximal degree in co-relation 20360. Up to 2727 conditions per place. [2022-11-16 11:11:06,063 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 100 selfloop transitions, 27 changer transitions 0/274 dead transitions. [2022-11-16 11:11:06,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 274 transitions, 1066 flow [2022-11-16 11:11:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:11:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:11:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1434 transitions. [2022-11-16 11:11:06,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7966666666666666 [2022-11-16 11:11:06,067 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1434 transitions. [2022-11-16 11:11:06,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1434 transitions. [2022-11-16 11:11:06,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:06,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1434 transitions. [2022-11-16 11:11:06,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.33333333333334) internal successors, (1434), 9 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:06,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:06,076 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:06,076 INFO L175 Difference]: Start difference. First operand has 196 places, 184 transitions, 486 flow. Second operand 9 states and 1434 transitions. [2022-11-16 11:11:06,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 274 transitions, 1066 flow [2022-11-16 11:11:06,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 274 transitions, 1055 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:11:06,086 INFO L231 Difference]: Finished difference. Result has 205 places, 203 transitions, 679 flow [2022-11-16 11:11:06,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=679, PETRI_PLACES=205, PETRI_TRANSITIONS=203} [2022-11-16 11:11:06,087 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 26 predicate places. [2022-11-16 11:11:06,087 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 203 transitions, 679 flow [2022-11-16 11:11:06,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:06,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:06,088 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:06,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:11:06,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash 457449289, now seen corresponding path program 1 times [2022-11-16 11:11:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:06,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080241364] [2022-11-16 11:11:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:06,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:06,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:06,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080241364] [2022-11-16 11:11:06,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080241364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:06,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:06,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:11:06,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211313736] [2022-11-16 11:11:06,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:06,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:11:06,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:06,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:11:06,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:11:06,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-16 11:11:06,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 203 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:06,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:06,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-16 11:11:06,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:08,523 INFO L130 PetriNetUnfolder]: 3817/13588 cut-off events. [2022-11-16 11:11:08,523 INFO L131 PetriNetUnfolder]: For 12657/12881 co-relation queries the response was YES. [2022-11-16 11:11:08,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27218 conditions, 13588 events. 3817/13588 cut-off events. For 12657/12881 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 158874 event pairs, 1099 based on Foata normal form. 248/12467 useless extension candidates. Maximal degree in co-relation 20418. Up to 2976 conditions per place. [2022-11-16 11:11:08,696 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 107 selfloop transitions, 27 changer transitions 0/281 dead transitions. [2022-11-16 11:11:08,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 281 transitions, 1324 flow [2022-11-16 11:11:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:11:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:11:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1432 transitions. [2022-11-16 11:11:08,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2022-11-16 11:11:08,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1432 transitions. [2022-11-16 11:11:08,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1432 transitions. [2022-11-16 11:11:08,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:08,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1432 transitions. [2022-11-16 11:11:08,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.11111111111111) internal successors, (1432), 9 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:08,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:08,727 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:08,728 INFO L175 Difference]: Start difference. First operand has 205 places, 203 transitions, 679 flow. Second operand 9 states and 1432 transitions. [2022-11-16 11:11:08,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 281 transitions, 1324 flow [2022-11-16 11:11:08,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 281 transitions, 1257 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-16 11:11:08,773 INFO L231 Difference]: Finished difference. Result has 211 places, 211 transitions, 760 flow [2022-11-16 11:11:08,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=760, PETRI_PLACES=211, PETRI_TRANSITIONS=211} [2022-11-16 11:11:08,775 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 32 predicate places. [2022-11-16 11:11:08,775 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 211 transitions, 760 flow [2022-11-16 11:11:08,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:08,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:08,776 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:11:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:11:08,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash 556356755, now seen corresponding path program 1 times [2022-11-16 11:11:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:08,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036288860] [2022-11-16 11:11:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:11:08,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:08,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036288860] [2022-11-16 11:11:08,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036288860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:08,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:08,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:08,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865427163] [2022-11-16 11:11:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:08,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:08,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:08,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:08,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:08,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-16 11:11:08,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 211 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:08,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:08,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-16 11:11:08,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:11,677 INFO L130 PetriNetUnfolder]: 4340/18329 cut-off events. [2022-11-16 11:11:11,677 INFO L131 PetriNetUnfolder]: For 16954/17324 co-relation queries the response was YES. [2022-11-16 11:11:11,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35989 conditions, 18329 events. 4340/18329 cut-off events. For 16954/17324 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 236506 event pairs, 1561 based on Foata normal form. 212/16628 useless extension candidates. Maximal degree in co-relation 32398. Up to 4797 conditions per place. [2022-11-16 11:11:11,903 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 93 selfloop transitions, 11 changer transitions 0/260 dead transitions. [2022-11-16 11:11:11,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 260 transitions, 1276 flow [2022-11-16 11:11:11,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:11:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:11:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2022-11-16 11:11:11,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.812 [2022-11-16 11:11:11,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2022-11-16 11:11:11,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2022-11-16 11:11:11,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:11,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2022-11-16 11:11:11,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:11,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:11,913 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:11,913 INFO L175 Difference]: Start difference. First operand has 211 places, 211 transitions, 760 flow. Second operand 5 states and 812 transitions. [2022-11-16 11:11:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 260 transitions, 1276 flow [2022-11-16 11:11:11,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 260 transitions, 1234 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:11:11,994 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 810 flow [2022-11-16 11:11:11,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=810, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2022-11-16 11:11:11,996 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 35 predicate places. [2022-11-16 11:11:11,996 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 810 flow [2022-11-16 11:11:11,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:11,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:11,997 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:11:11,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:11:11,998 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:11,998 INFO L85 PathProgramCache]: Analyzing trace with hash -430259446, now seen corresponding path program 1 times [2022-11-16 11:11:11,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:11,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83174459] [2022-11-16 11:11:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:11,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:11:12,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:12,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83174459] [2022-11-16 11:11:12,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83174459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:12,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:12,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:11:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681716216] [2022-11-16 11:11:12,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:12,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:11:12,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:12,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:11:12,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:11:12,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-16 11:11:12,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:12,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:12,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-16 11:11:12,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:18,206 INFO L130 PetriNetUnfolder]: 9322/35901 cut-off events. [2022-11-16 11:11:18,206 INFO L131 PetriNetUnfolder]: For 32647/33945 co-relation queries the response was YES. [2022-11-16 11:11:18,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71736 conditions, 35901 events. 9322/35901 cut-off events. For 32647/33945 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 505660 event pairs, 3511 based on Foata normal form. 441/32657 useless extension candidates. Maximal degree in co-relation 49469. Up to 7067 conditions per place. [2022-11-16 11:11:18,663 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 149 selfloop transitions, 46 changer transitions 0/346 dead transitions. [2022-11-16 11:11:18,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 346 transitions, 1956 flow [2022-11-16 11:11:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:11:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:11:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1431 transitions. [2022-11-16 11:11:18,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.795 [2022-11-16 11:11:18,669 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1431 transitions. [2022-11-16 11:11:18,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1431 transitions. [2022-11-16 11:11:18,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:18,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1431 transitions. [2022-11-16 11:11:18,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:18,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:18,679 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:18,679 INFO L175 Difference]: Start difference. First operand has 214 places, 216 transitions, 810 flow. Second operand 9 states and 1431 transitions. [2022-11-16 11:11:18,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 346 transitions, 1956 flow [2022-11-16 11:11:18,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 346 transitions, 1950 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:11:18,887 INFO L231 Difference]: Finished difference. Result has 227 places, 251 transitions, 1294 flow [2022-11-16 11:11:18,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1294, PETRI_PLACES=227, PETRI_TRANSITIONS=251} [2022-11-16 11:11:18,888 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 48 predicate places. [2022-11-16 11:11:18,888 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 251 transitions, 1294 flow [2022-11-16 11:11:18,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:18,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:18,889 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:11:18,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:11:18,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:18,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash -598489023, now seen corresponding path program 1 times [2022-11-16 11:11:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:18,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738192022] [2022-11-16 11:11:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:18,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:19,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:19,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738192022] [2022-11-16 11:11:19,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738192022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:11:19,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877593431] [2022-11-16 11:11:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:19,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:19,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:19,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:19,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:11:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:19,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:11:19,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:19,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:11:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:19,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877593431] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:11:19,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:11:19,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-16 11:11:19,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761121956] [2022-11-16 11:11:19,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:11:19,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:11:19,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:19,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:11:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:11:19,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 200 [2022-11-16 11:11:19,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 251 transitions, 1294 flow. Second operand has 14 states, 14 states have (on average 115.5) internal successors, (1617), 14 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:19,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:19,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 200 [2022-11-16 11:11:19,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:27,040 INFO L130 PetriNetUnfolder]: 8819/33664 cut-off events. [2022-11-16 11:11:27,040 INFO L131 PetriNetUnfolder]: For 45771/46468 co-relation queries the response was YES. [2022-11-16 11:11:27,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70612 conditions, 33664 events. 8819/33664 cut-off events. For 45771/46468 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 441101 event pairs, 1245 based on Foata normal form. 2353/33547 useless extension candidates. Maximal degree in co-relation 57660. Up to 6302 conditions per place. [2022-11-16 11:11:27,346 INFO L137 encePairwiseOnDemand]: 175/200 looper letters, 489 selfloop transitions, 232 changer transitions 0/839 dead transitions. [2022-11-16 11:11:27,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 839 transitions, 5583 flow [2022-11-16 11:11:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:11:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:11:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5553 transitions. [2022-11-16 11:11:27,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6310227272727272 [2022-11-16 11:11:27,352 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5553 transitions. [2022-11-16 11:11:27,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5553 transitions. [2022-11-16 11:11:27,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:27,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5553 transitions. [2022-11-16 11:11:27,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 126.20454545454545) internal successors, (5553), 44 states have internal predecessors, (5553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:27,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 200.0) internal successors, (9000), 45 states have internal predecessors, (9000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:27,382 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 200.0) internal successors, (9000), 45 states have internal predecessors, (9000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:27,382 INFO L175 Difference]: Start difference. First operand has 227 places, 251 transitions, 1294 flow. Second operand 44 states and 5553 transitions. [2022-11-16 11:11:27,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 839 transitions, 5583 flow [2022-11-16 11:11:27,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 839 transitions, 5516 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-16 11:11:27,669 INFO L231 Difference]: Finished difference. Result has 286 places, 440 transitions, 3407 flow [2022-11-16 11:11:27,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3407, PETRI_PLACES=286, PETRI_TRANSITIONS=440} [2022-11-16 11:11:27,670 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 107 predicate places. [2022-11-16 11:11:27,670 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 440 transitions, 3407 flow [2022-11-16 11:11:27,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 115.5) internal successors, (1617), 14 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:27,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:27,671 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:11:27,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:27,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:27,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:27,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:27,877 INFO L85 PathProgramCache]: Analyzing trace with hash -453140213, now seen corresponding path program 1 times [2022-11-16 11:11:27,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:27,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904736591] [2022-11-16 11:11:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:27,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:11:27,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:27,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904736591] [2022-11-16 11:11:27,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904736591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:27,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:27,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:11:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844839062] [2022-11-16 11:11:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:11:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:11:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:11:27,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 200 [2022-11-16 11:11:27,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 440 transitions, 3407 flow. Second operand has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:27,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:27,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 200 [2022-11-16 11:11:27,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:33,155 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][401], [395#true, 161#L701-16true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 869#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), Black: 901#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 877#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 897#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 867#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 887#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 881#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 891#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 873#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 412#(= ~global~0 0), Black: 885#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 903#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), 832#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 893#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 875#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), t_funThread2of3ForFork0InUse, Black: 420#true, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), t_funThread3of3ForFork0NotInUse, Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 202#true, 8#L711-5true, 939#(<= 1 |t_funThread2of3ForFork0_#t~post7|)]) [2022-11-16 11:11:33,155 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-16 11:11:33,155 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-16 11:11:33,156 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-16 11:11:33,156 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-16 11:11:33,189 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][217], [395#true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 869#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), Black: 901#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 877#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 897#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 867#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 887#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 881#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 891#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 873#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 424#(<= ~global~0 1), Black: 412#(= ~global~0 0), Black: 885#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 903#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), 832#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 893#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 875#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, 934#true, t_funThread2of3ForFork0InUse, Black: 420#true, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), t_funThread3of3ForFork0NotInUse, Black: 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 168#L701-17true, 202#true, 8#L711-5true]) [2022-11-16 11:11:33,189 INFO L383 tUnfolder$Statistics]: this new event has 165 ancestors and is cut-off event [2022-11-16 11:11:33,190 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-16 11:11:33,190 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-16 11:11:33,190 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-16 11:11:33,240 INFO L130 PetriNetUnfolder]: 3586/26307 cut-off events. [2022-11-16 11:11:33,240 INFO L131 PetriNetUnfolder]: For 59982/61070 co-relation queries the response was YES. [2022-11-16 11:11:33,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53335 conditions, 26307 events. 3586/26307 cut-off events. For 59982/61070 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 386385 event pairs, 1408 based on Foata normal form. 401/23628 useless extension candidates. Maximal degree in co-relation 52344. Up to 4590 conditions per place. [2022-11-16 11:11:33,536 INFO L137 encePairwiseOnDemand]: 187/200 looper letters, 219 selfloop transitions, 63 changer transitions 0/514 dead transitions. [2022-11-16 11:11:33,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 514 transitions, 4564 flow [2022-11-16 11:11:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:11:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:11:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1425 transitions. [2022-11-16 11:11:33,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2022-11-16 11:11:33,539 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1425 transitions. [2022-11-16 11:11:33,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1425 transitions. [2022-11-16 11:11:33,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:33,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1425 transitions. [2022-11-16 11:11:33,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.33333333333334) internal successors, (1425), 9 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:33,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:33,547 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 200.0) internal successors, (2000), 10 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:33,547 INFO L175 Difference]: Start difference. First operand has 286 places, 440 transitions, 3407 flow. Second operand 9 states and 1425 transitions. [2022-11-16 11:11:33,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 514 transitions, 4564 flow [2022-11-16 11:11:33,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 514 transitions, 4114 flow, removed 178 selfloop flow, removed 8 redundant places. [2022-11-16 11:11:33,817 INFO L231 Difference]: Finished difference. Result has 287 places, 442 transitions, 3162 flow [2022-11-16 11:11:33,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3162, PETRI_PLACES=287, PETRI_TRANSITIONS=442} [2022-11-16 11:11:33,818 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 108 predicate places. [2022-11-16 11:11:33,818 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 442 transitions, 3162 flow [2022-11-16 11:11:33,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:33,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:33,819 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 11:11:33,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:11:33,819 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:33,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:33,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1815986218, now seen corresponding path program 1 times [2022-11-16 11:11:33,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:33,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987875051] [2022-11-16 11:11:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:33,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:11:33,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:33,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987875051] [2022-11-16 11:11:33,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987875051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:33,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:33,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:33,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198564288] [2022-11-16 11:11:33,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:33,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:33,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:33,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:33,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 200 [2022-11-16 11:11:33,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 442 transitions, 3162 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:33,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:33,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 200 [2022-11-16 11:11:33,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:38,975 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([781] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][206], [395#true, 161#L701-16true, Black: 381#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 385#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 380#(<= ~global~0 1), Black: 387#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 379#(= |t_funThread1of3ForFork0_#t~post5| 0), 948#true, Black: 850#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 869#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0)), Black: 901#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 842#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1)), Black: 877#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 406#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 897#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 399#(<= 1 ~global~0), Black: 840#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 848#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 846#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 867#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 887#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 881#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 891#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 873#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 412#(= ~global~0 0), Black: 885#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1)), Black: 413#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 903#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (< ~global~0 2147483647)), Black: 415#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), 832#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 893#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex~0.base| |~#__global_lock~0.base|))), Black: 875#(and (<= |~#__global_lock~0.base| 3) (= (select (select |#pthreadsMutex| |~#mutex~0.base|) |~#mutex~0.offset|) 1) (not (= |~#mutex~0.base| |~#__global_lock~0.base|)) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1)), 215#(<= 1 |ULTIMATE.start_main_~i~0#1|), t_funThread1of3ForFork0NotInUse, Black: 424#(<= ~global~0 1), t_funThread2of3ForFork0InUse, Black: 425#(<= |t_funThread2of3ForFork0_#t~post7| 1), t_funThread3of3ForFork0NotInUse, Black: 945#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post7|)), Black: 423#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 429#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 431#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 187#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 184#(= |ULTIMATE.start_main_~i~0#1| 0), 376#true, Black: 194#(= ~global~0 0), Black: 195#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 197#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), 202#true, 8#L711-5true, 939#(<= 1 |t_funThread2of3ForFork0_#t~post7|)]) [2022-11-16 11:11:38,975 INFO L383 tUnfolder$Statistics]: this new event has 164 ancestors and is cut-off event [2022-11-16 11:11:38,976 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-16 11:11:38,976 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-16 11:11:38,976 INFO L386 tUnfolder$Statistics]: existing Event has 117 ancestors and is cut-off event [2022-11-16 11:11:39,102 INFO L130 PetriNetUnfolder]: 2995/24018 cut-off events. [2022-11-16 11:11:39,102 INFO L131 PetriNetUnfolder]: For 50313/51429 co-relation queries the response was YES. [2022-11-16 11:11:39,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47297 conditions, 24018 events. 2995/24018 cut-off events. For 50313/51429 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 350732 event pairs, 1358 based on Foata normal form. 394/21441 useless extension candidates. Maximal degree in co-relation 46309. Up to 4575 conditions per place. [2022-11-16 11:11:39,353 INFO L137 encePairwiseOnDemand]: 192/200 looper letters, 201 selfloop transitions, 15 changer transitions 0/488 dead transitions. [2022-11-16 11:11:39,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 488 transitions, 4062 flow [2022-11-16 11:11:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:11:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:11:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 810 transitions. [2022-11-16 11:11:39,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81 [2022-11-16 11:11:39,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 810 transitions. [2022-11-16 11:11:39,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 810 transitions. [2022-11-16 11:11:39,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:39,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 810 transitions. [2022-11-16 11:11:39,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,360 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,360 INFO L175 Difference]: Start difference. First operand has 287 places, 442 transitions, 3162 flow. Second operand 5 states and 810 transitions. [2022-11-16 11:11:39,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 488 transitions, 4062 flow [2022-11-16 11:11:39,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 488 transitions, 3974 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-16 11:11:39,532 INFO L231 Difference]: Finished difference. Result has 290 places, 446 transitions, 3178 flow [2022-11-16 11:11:39,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3178, PETRI_PLACES=290, PETRI_TRANSITIONS=446} [2022-11-16 11:11:39,532 INFO L288 CegarLoopForPetriNet]: 179 programPoint places, 111 predicate places. [2022-11-16 11:11:39,533 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 446 transitions, 3178 flow [2022-11-16 11:11:39,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:39,533 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 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] [2022-11-16 11:11:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:11:39,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:11:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash 125330092, now seen corresponding path program 1 times [2022-11-16 11:11:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:39,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84142135] [2022-11-16 11:11:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:11:39,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:11:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:11:39,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:11:39,584 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:11:39,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-16 11:11:39,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-16 11:11:39,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-16 11:11:39,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-16 11:11:39,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-16 11:11:39,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-16 11:11:39,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-16 11:11:39,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-16 11:11:39,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-16 11:11:39,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-16 11:11:39,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-16 11:11:39,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-16 11:11:39,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-16 11:11:39,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-16 11:11:39,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-16 11:11:39,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-16 11:11:39,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-16 11:11:39,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-16 11:11:39,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-16 11:11:39,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-16 11:11:39,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-16 11:11:39,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:11:39,588 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:39,591 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:11:39,591 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:11:39,622 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:11:39,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 238 transitions, 520 flow [2022-11-16 11:11:39,719 INFO L130 PetriNetUnfolder]: 91/671 cut-off events. [2022-11-16 11:11:39,719 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-16 11:11:39,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 671 events. 91/671 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2639 event pairs, 6 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 452. Up to 32 conditions per place. [2022-11-16 11:11:39,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 238 transitions, 520 flow [2022-11-16 11:11:39,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 238 transitions, 520 flow [2022-11-16 11:11:39,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:11:39,730 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;@60f59347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:11:39,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 11:11:39,734 INFO L130 PetriNetUnfolder]: 4/67 cut-off events. [2022-11-16 11:11:39,734 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:11:39,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:39,735 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] [2022-11-16 11:11:39,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:11:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:39,735 INFO L85 PathProgramCache]: Analyzing trace with hash -115930237, now seen corresponding path program 1 times [2022-11-16 11:11:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:39,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401327117] [2022-11-16 11:11:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:39,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:39,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:39,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401327117] [2022-11-16 11:11:39,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401327117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:39,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:39,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:39,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043956868] [2022-11-16 11:11:39,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:39,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:39,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:39,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 238 [2022-11-16 11:11:39,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 238 transitions, 520 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:39,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 238 [2022-11-16 11:11:39,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:39,915 INFO L130 PetriNetUnfolder]: 24/580 cut-off events. [2022-11-16 11:11:39,915 INFO L131 PetriNetUnfolder]: For 143/273 co-relation queries the response was YES. [2022-11-16 11:11:39,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 580 events. 24/580 cut-off events. For 143/273 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2382 event pairs, 6 based on Foata normal form. 632/1132 useless extension candidates. Maximal degree in co-relation 441. Up to 71 conditions per place. [2022-11-16 11:11:39,923 INFO L137 encePairwiseOnDemand]: 201/238 looper letters, 23 selfloop transitions, 4 changer transitions 0/214 dead transitions. [2022-11-16 11:11:39,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 214 transitions, 526 flow [2022-11-16 11:11:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:11:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:11:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1014 transitions. [2022-11-16 11:11:39,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521008403361344 [2022-11-16 11:11:39,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1014 transitions. [2022-11-16 11:11:39,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1014 transitions. [2022-11-16 11:11:39,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:39,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1014 transitions. [2022-11-16 11:11:39,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.8) internal successors, (1014), 5 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,930 INFO L175 Difference]: Start difference. First operand has 212 places, 238 transitions, 520 flow. Second operand 5 states and 1014 transitions. [2022-11-16 11:11:39,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 214 transitions, 526 flow [2022-11-16 11:11:39,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 214 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:11:39,934 INFO L231 Difference]: Finished difference. Result has 218 places, 210 transitions, 490 flow [2022-11-16 11:11:39,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=218, PETRI_TRANSITIONS=210} [2022-11-16 11:11:39,935 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 6 predicate places. [2022-11-16 11:11:39,935 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 210 transitions, 490 flow [2022-11-16 11:11:39,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:39,935 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] [2022-11-16 11:11:39,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:11:39,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:11:39,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:39,936 INFO L85 PathProgramCache]: Analyzing trace with hash 87849525, now seen corresponding path program 1 times [2022-11-16 11:11:39,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:39,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616450200] [2022-11-16 11:11:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:39,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:39,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:39,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616450200] [2022-11-16 11:11:39,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616450200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:39,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:39,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:39,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77882809] [2022-11-16 11:11:39,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:39,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:39,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 238 [2022-11-16 11:11:39,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 210 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:39,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:39,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 238 [2022-11-16 11:11:39,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:47,774 INFO L130 PetriNetUnfolder]: 15478/55517 cut-off events. [2022-11-16 11:11:47,775 INFO L131 PetriNetUnfolder]: For 9933/9933 co-relation queries the response was YES. [2022-11-16 11:11:48,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81038 conditions, 55517 events. 15478/55517 cut-off events. For 9933/9933 co-relation queries the response was YES. Maximal size of possible extension queue 1694. Compared 785523 event pairs, 9757 based on Foata normal form. 0/48292 useless extension candidates. Maximal degree in co-relation 80976. Up to 15260 conditions per place. [2022-11-16 11:11:48,711 INFO L137 encePairwiseOnDemand]: 229/238 looper letters, 68 selfloop transitions, 10 changer transitions 0/257 dead transitions. [2022-11-16 11:11:48,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 257 transitions, 812 flow [2022-11-16 11:11:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:11:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:11:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 962 transitions. [2022-11-16 11:11:48,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8084033613445378 [2022-11-16 11:11:48,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 962 transitions. [2022-11-16 11:11:48,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 962 transitions. [2022-11-16 11:11:48,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:48,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 962 transitions. [2022-11-16 11:11:48,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:48,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:48,718 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:48,719 INFO L175 Difference]: Start difference. First operand has 218 places, 210 transitions, 490 flow. Second operand 5 states and 962 transitions. [2022-11-16 11:11:48,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 257 transitions, 812 flow [2022-11-16 11:11:48,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 257 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:11:48,726 INFO L231 Difference]: Finished difference. Result has 224 places, 219 transitions, 567 flow [2022-11-16 11:11:48,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=567, PETRI_PLACES=224, PETRI_TRANSITIONS=219} [2022-11-16 11:11:48,726 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 12 predicate places. [2022-11-16 11:11:48,726 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 219 transitions, 567 flow [2022-11-16 11:11:48,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:48,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:48,727 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:11:48,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:11:48,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:11:48,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:48,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2082894953, now seen corresponding path program 1 times [2022-11-16 11:11:48,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:48,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125311954] [2022-11-16 11:11:48,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:48,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:11:48,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:48,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125311954] [2022-11-16 11:11:48,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125311954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:48,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:48,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:48,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219270] [2022-11-16 11:11:48,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:48,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:48,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:48,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:48,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 238 [2022-11-16 11:11:48,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 219 transitions, 567 flow. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:48,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:48,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 238 [2022-11-16 11:11:48,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:49,321 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][124], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, 225#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 21#t_funENTRYtrue, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-16 11:11:49,321 INFO L383 tUnfolder$Statistics]: this new event has 192 ancestors and is cut-off event [2022-11-16 11:11:49,321 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-16 11:11:49,321 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-16 11:11:49,321 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-16 11:11:49,368 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][124], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 170#L701-6true, 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, 225#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-16 11:11:49,368 INFO L383 tUnfolder$Statistics]: this new event has 202 ancestors and is cut-off event [2022-11-16 11:11:49,368 INFO L386 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-11-16 11:11:49,368 INFO L386 tUnfolder$Statistics]: existing Event has 108 ancestors and is cut-off event [2022-11-16 11:11:49,368 INFO L386 tUnfolder$Statistics]: existing Event has 155 ancestors and is cut-off event [2022-11-16 11:11:49,393 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][124], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, 225#true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-16 11:11:49,394 INFO L383 tUnfolder$Statistics]: this new event has 227 ancestors and is cut-off event [2022-11-16 11:11:49,394 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-11-16 11:11:49,394 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-11-16 11:11:49,394 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-11-16 11:11:49,398 INFO L130 PetriNetUnfolder]: 168/2695 cut-off events. [2022-11-16 11:11:49,398 INFO L131 PetriNetUnfolder]: For 832/1807 co-relation queries the response was YES. [2022-11-16 11:11:49,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 2695 events. 168/2695 cut-off events. For 832/1807 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23116 event pairs, 64 based on Foata normal form. 108/2390 useless extension candidates. Maximal degree in co-relation 2647. Up to 205 conditions per place. [2022-11-16 11:11:49,462 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 15 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2022-11-16 11:11:49,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 219 transitions, 611 flow [2022-11-16 11:11:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:11:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:11:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 956 transitions. [2022-11-16 11:11:49,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8033613445378152 [2022-11-16 11:11:49,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 956 transitions. [2022-11-16 11:11:49,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 956 transitions. [2022-11-16 11:11:49,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:49,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 956 transitions. [2022-11-16 11:11:49,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.2) internal successors, (956), 5 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:49,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:49,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:49,469 INFO L175 Difference]: Start difference. First operand has 224 places, 219 transitions, 567 flow. Second operand 5 states and 956 transitions. [2022-11-16 11:11:49,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 219 transitions, 611 flow [2022-11-16 11:11:49,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 219 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:11:49,474 INFO L231 Difference]: Finished difference. Result has 227 places, 219 transitions, 582 flow [2022-11-16 11:11:49,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=582, PETRI_PLACES=227, PETRI_TRANSITIONS=219} [2022-11-16 11:11:49,475 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 15 predicate places. [2022-11-16 11:11:49,475 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 219 transitions, 582 flow [2022-11-16 11:11:49,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:49,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:49,476 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] [2022-11-16 11:11:49,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:11:49,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:11:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash 145234973, now seen corresponding path program 1 times [2022-11-16 11:11:49,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:49,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903864453] [2022-11-16 11:11:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:49,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:49,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:49,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903864453] [2022-11-16 11:11:49,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903864453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:11:49,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950592258] [2022-11-16 11:11:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:49,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:49,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:49,539 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:49,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:11:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:49,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:11:49,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:49,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:11:49,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950592258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:49,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:11:49,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:11:49,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542965417] [2022-11-16 11:11:49,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:49,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:11:49,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:49,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:11:49,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:11:49,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 238 [2022-11-16 11:11:49,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 219 transitions, 582 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:49,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:49,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 238 [2022-11-16 11:11:49,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:11:50,123 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][126], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 248#(<= 1 |ULTIMATE.start_main_~i~0#1|), 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 21#t_funENTRYtrue, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-16 11:11:50,123 INFO L383 tUnfolder$Statistics]: this new event has 192 ancestors and is cut-off event [2022-11-16 11:11:50,123 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-16 11:11:50,123 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-16 11:11:50,123 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-16 11:11:50,153 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][126], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 248#(<= 1 |ULTIMATE.start_main_~i~0#1|), 235#true, 170#L701-6true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-16 11:11:50,153 INFO L383 tUnfolder$Statistics]: this new event has 202 ancestors and is cut-off event [2022-11-16 11:11:50,153 INFO L386 tUnfolder$Statistics]: existing Event has 108 ancestors and is cut-off event [2022-11-16 11:11:50,153 INFO L386 tUnfolder$Statistics]: existing Event has 155 ancestors and is cut-off event [2022-11-16 11:11:50,153 INFO L386 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-11-16 11:11:50,374 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1056] t_funEXIT-->L711-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem14#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem14#1=|v_ULTIMATE.start_main_#t~mem14#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][126], [Black: 217#(= |ULTIMATE.start_main_~i~0#1| 0), 248#(<= 1 |ULTIMATE.start_main_~i~0#1|), 235#true, 99#L711-5true, Black: 227#(= ~global~0 0), Black: 230#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 228#(= |t_funThread1of4ForFork0_#t~post5| 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 220#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 218#(= |ULTIMATE.start_main_#t~post8#1| 0)]) [2022-11-16 11:11:50,374 INFO L383 tUnfolder$Statistics]: this new event has 227 ancestors and is cut-off event [2022-11-16 11:11:50,374 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-11-16 11:11:50,375 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-11-16 11:11:50,375 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-11-16 11:11:50,378 INFO L130 PetriNetUnfolder]: 168/2692 cut-off events. [2022-11-16 11:11:50,378 INFO L131 PetriNetUnfolder]: For 835/1728 co-relation queries the response was YES. [2022-11-16 11:11:50,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 2692 events. 168/2692 cut-off events. For 835/1728 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23061 event pairs, 64 based on Foata normal form. 41/2320 useless extension candidates. Maximal degree in co-relation 2646. Up to 214 conditions per place. [2022-11-16 11:11:50,404 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 19 selfloop transitions, 6 changer transitions 0/221 dead transitions. [2022-11-16 11:11:50,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 221 transitions, 634 flow [2022-11-16 11:11:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:11:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:11:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1335 transitions. [2022-11-16 11:11:50,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8013205282112845 [2022-11-16 11:11:50,407 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1335 transitions. [2022-11-16 11:11:50,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1335 transitions. [2022-11-16 11:11:50,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:11:50,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1335 transitions. [2022-11-16 11:11:50,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.71428571428572) internal successors, (1335), 7 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:50,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:50,414 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:50,414 INFO L175 Difference]: Start difference. First operand has 227 places, 219 transitions, 582 flow. Second operand 7 states and 1335 transitions. [2022-11-16 11:11:50,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 221 transitions, 634 flow [2022-11-16 11:11:50,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 221 transitions, 622 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:11:50,420 INFO L231 Difference]: Finished difference. Result has 229 places, 218 transitions, 578 flow [2022-11-16 11:11:50,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=229, PETRI_TRANSITIONS=218} [2022-11-16 11:11:50,421 INFO L288 CegarLoopForPetriNet]: 212 programPoint places, 17 predicate places. [2022-11-16 11:11:50,421 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 218 transitions, 578 flow [2022-11-16 11:11:50,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:50,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:50,422 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] [2022-11-16 11:11:50,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:50,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8deb0f5-8bb9-4ee8-9ae9-4e004e9a34b5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 11:11:50,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:11:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:50,628 INFO L85 PathProgramCache]: Analyzing trace with hash -946427902, now seen corresponding path program 1 times [2022-11-16 11:11:50,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:50,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424229995] [2022-11-16 11:11:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:50,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:50,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:50,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424229995] [2022-11-16 11:11:50,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424229995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:50,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:50,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:11:50,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942227255] [2022-11-16 11:11:50,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:50,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:11:50,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:50,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:11:50,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:11:50,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 238 [2022-11-16 11:11:50,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 218 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 172.5) internal successors, (1035), 6 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:50,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:50,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 238 [2022-11-16 11:11:50,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand