./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:05:01,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:05:01,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:05:01,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:05:01,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:05:01,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:05:01,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:05:01,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:05:01,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:05:01,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:05:01,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:05:01,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:05:01,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:05:01,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:05:01,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:05:01,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:05:01,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:05:01,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:05:01,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:05:01,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:05:01,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:05:01,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:05:01,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:05:01,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:05:01,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:05:01,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:05:01,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:05:01,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:05:01,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:05:01,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:05:01,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:05:01,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:05:01,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:05:01,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:05:01,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:05:01,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:05:01,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:05:01,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:05:01,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:05:01,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:05:01,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:05:01,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:05:01,524 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:05:01,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:05:01,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:05:01,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:05:01,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:05:01,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:05:01,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:05:01,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:05:01,526 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:05:01,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:05:01,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:05:01,530 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:05:01,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:05:01,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:05:01,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:05:01,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:05:01,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:05:01,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:05:01,531 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:05:01,532 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:05:01,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:05:01,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:05:01,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:05:01,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:05:01,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:05:01,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:05:01,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:05:01,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:05:01,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:05:01,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:05:01,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:05:01,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:05:01,534 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:05:01,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:05:01,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:05:01,535 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_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 [2022-11-18 20:05:01,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:05:01,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:05:01,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:05:01,844 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:05:01,845 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:05:01,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-18 20:05:01,938 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/data/42d2e095b/ff6b288c4f9e401ba6099bbf530e7704/FLAGeaa79bedb [2022-11-18 20:05:02,511 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:05:02,511 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-18 20:05:02,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/data/42d2e095b/ff6b288c4f9e401ba6099bbf530e7704/FLAGeaa79bedb [2022-11-18 20:05:02,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/data/42d2e095b/ff6b288c4f9e401ba6099bbf530e7704 [2022-11-18 20:05:02,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:05:02,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:05:02,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:02,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:05:02,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:05:02,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:02" (1/1) ... [2022-11-18 20:05:02,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac8171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:02, skipping insertion in model container [2022-11-18 20:05:02,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:02" (1/1) ... [2022-11-18 20:05:02,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:05:02,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:05:03,183 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-18 20:05:03,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:03,198 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:05:03,223 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-18 20:05:03,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:03,241 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:05:03,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03 WrapperNode [2022-11-18 20:05:03,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:03,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:05:03,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:05:03,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:05:03,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,282 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 210 [2022-11-18 20:05:03,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:05:03,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:05:03,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:05:03,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:05:03,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,311 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:05:03,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:05:03,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:05:03,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:05:03,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (1/1) ... [2022-11-18 20:05:03,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:05:03,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:03,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:05:03,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:05:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:05:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:05:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:05:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:05:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:05:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:05:03,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:05:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:05:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:05:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:05:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:05:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:05:03,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:05:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:05:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:05:03,418 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:05:03,588 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:05:03,590 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:05:04,140 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:05:04,151 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:05:04,151 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:05:04,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:04 BoogieIcfgContainer [2022-11-18 20:05:04,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:05:04,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:05:04,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:05:04,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:05:04,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:05:02" (1/3) ... [2022-11-18 20:05:04,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bde9b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:04, skipping insertion in model container [2022-11-18 20:05:04,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:03" (2/3) ... [2022-11-18 20:05:04,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bde9b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:04, skipping insertion in model container [2022-11-18 20:05:04,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:04" (3/3) ... [2022-11-18 20:05:04,183 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2022-11-18 20:05:04,192 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:05:04,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:05:04,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 20:05:04,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:05:04,307 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:05:04,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 329 transitions, 682 flow [2022-11-18 20:05:04,481 INFO L130 PetriNetUnfolder]: 30/326 cut-off events. [2022-11-18 20:05:04,481 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:05:04,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 326 events. 30/326 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 221. Up to 3 conditions per place. [2022-11-18 20:05:04,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 329 transitions, 682 flow [2022-11-18 20:05:04,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 247 transitions, 509 flow [2022-11-18 20:05:04,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:05:04,512 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;@aa506af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:05:04,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 20:05:04,539 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2022-11-18 20:05:04,539 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:05:04,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:04,540 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:04,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:04,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:04,546 INFO L85 PathProgramCache]: Analyzing trace with hash -895934613, now seen corresponding path program 1 times [2022-11-18 20:05:04,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:04,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507790521] [2022-11-18 20:05:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:04,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:04,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:04,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507790521] [2022-11-18 20:05:04,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507790521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:04,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:04,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:04,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673737078] [2022-11-18 20:05:04,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:05,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:05,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:05,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:05,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-18 20:05:05,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 247 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 272.5) internal successors, (1090), 4 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:05,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:05,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-18 20:05:05,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:05,279 INFO L130 PetriNetUnfolder]: 17/370 cut-off events. [2022-11-18 20:05:05,279 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:05:05,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 370 events. 17/370 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 850 event pairs, 0 based on Foata normal form. 24/352 useless extension candidates. Maximal degree in co-relation 386. Up to 44 conditions per place. [2022-11-18 20:05:05,285 INFO L137 encePairwiseOnDemand]: 297/329 looper letters, 58 selfloop transitions, 14 changer transitions 6/266 dead transitions. [2022-11-18 20:05:05,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 266 transitions, 706 flow [2022-11-18 20:05:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1451 transitions. [2022-11-18 20:05:05,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8820668693009118 [2022-11-18 20:05:05,305 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1451 transitions. [2022-11-18 20:05:05,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1451 transitions. [2022-11-18 20:05:05,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:05,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1451 transitions. [2022-11-18 20:05:05,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:05,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:05,332 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:05,334 INFO L175 Difference]: Start difference. First operand has 236 places, 247 transitions, 509 flow. Second operand 5 states and 1451 transitions. [2022-11-18 20:05:05,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 266 transitions, 706 flow [2022-11-18 20:05:05,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 266 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:05:05,353 INFO L231 Difference]: Finished difference. Result has 238 places, 240 transitions, 568 flow [2022-11-18 20:05:05,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=238, PETRI_TRANSITIONS=240} [2022-11-18 20:05:05,360 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 2 predicate places. [2022-11-18 20:05:05,361 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 240 transitions, 568 flow [2022-11-18 20:05:05,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.5) internal successors, (1090), 4 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:05,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:05,363 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:05,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:05:05,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash -208542109, now seen corresponding path program 1 times [2022-11-18 20:05:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:05,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962042510] [2022-11-18 20:05:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:05,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:05,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962042510] [2022-11-18 20:05:05,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962042510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:05,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378482804] [2022-11-18 20:05:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:05,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:05,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:05,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:05,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:05:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:05,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:05:05,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:05,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:05,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378482804] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:05,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:05,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:05:05,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626022344] [2022-11-18 20:05:05,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:05,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:05:05,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:05,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:05:05,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:05:05,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-18 20:05:05,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 240 transitions, 568 flow. Second operand has 12 states, 12 states have (on average 273.6666666666667) internal successors, (3284), 12 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:05,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:05,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-18 20:05:05,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:06,524 INFO L130 PetriNetUnfolder]: 41/775 cut-off events. [2022-11-18 20:05:06,525 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 20:05:06,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 775 events. 41/775 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3054 event pairs, 0 based on Foata normal form. 9/709 useless extension candidates. Maximal degree in co-relation 480. Up to 35 conditions per place. [2022-11-18 20:05:06,532 INFO L137 encePairwiseOnDemand]: 306/329 looper letters, 109 selfloop transitions, 62 changer transitions 0/359 dead transitions. [2022-11-18 20:05:06,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 359 transitions, 1250 flow [2022-11-18 20:05:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:05:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:05:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5058 transitions. [2022-11-18 20:05:06,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8541033434650456 [2022-11-18 20:05:06,542 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5058 transitions. [2022-11-18 20:05:06,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5058 transitions. [2022-11-18 20:05:06,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:06,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5058 transitions. [2022-11-18 20:05:06,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:06,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 329.0) internal successors, (6251), 19 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:06,572 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 329.0) internal successors, (6251), 19 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:06,573 INFO L175 Difference]: Start difference. First operand has 238 places, 240 transitions, 568 flow. Second operand 18 states and 5058 transitions. [2022-11-18 20:05:06,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 359 transitions, 1250 flow [2022-11-18 20:05:06,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 359 transitions, 1242 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:05:06,582 INFO L231 Difference]: Finished difference. Result has 252 places, 282 transitions, 930 flow [2022-11-18 20:05:06,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=930, PETRI_PLACES=252, PETRI_TRANSITIONS=282} [2022-11-18 20:05:06,583 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 16 predicate places. [2022-11-18 20:05:06,584 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 282 transitions, 930 flow [2022-11-18 20:05:06,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 273.6666666666667) internal successors, (3284), 12 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:06,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:06,586 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:06,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:05:06,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:06,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:06,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:06,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2125129790, now seen corresponding path program 1 times [2022-11-18 20:05:06,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:06,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776908355] [2022-11-18 20:05:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:06,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:06,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:06,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776908355] [2022-11-18 20:05:06,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776908355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:06,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227350444] [2022-11-18 20:05:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:06,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:06,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:06,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:06,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:05:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:07,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:05:07,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:07,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:05:07,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227350444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:07,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:05:07,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:05:07,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340276124] [2022-11-18 20:05:07,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:07,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:05:07,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:07,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:05:07,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:05:07,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-18 20:05:07,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 282 transitions, 930 flow. Second operand has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:07,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:07,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-18 20:05:07,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:07,458 INFO L130 PetriNetUnfolder]: 41/763 cut-off events. [2022-11-18 20:05:07,458 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-18 20:05:07,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 763 events. 41/763 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2976 event pairs, 0 based on Foata normal form. 12/700 useless extension candidates. Maximal degree in co-relation 842. Up to 68 conditions per place. [2022-11-18 20:05:07,464 INFO L137 encePairwiseOnDemand]: 312/329 looper letters, 59 selfloop transitions, 43 changer transitions 0/290 dead transitions. [2022-11-18 20:05:07,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 290 transitions, 1105 flow [2022-11-18 20:05:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:05:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:05:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1969 transitions. [2022-11-18 20:05:07,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8549717759444203 [2022-11-18 20:05:07,469 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1969 transitions. [2022-11-18 20:05:07,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1969 transitions. [2022-11-18 20:05:07,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:07,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1969 transitions. [2022-11-18 20:05:07,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.2857142857143) internal successors, (1969), 7 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:07,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:07,482 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:07,482 INFO L175 Difference]: Start difference. First operand has 252 places, 282 transitions, 930 flow. Second operand 7 states and 1969 transitions. [2022-11-18 20:05:07,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 290 transitions, 1105 flow [2022-11-18 20:05:07,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 290 transitions, 989 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 20:05:07,496 INFO L231 Difference]: Finished difference. Result has 246 places, 270 transitions, 819 flow [2022-11-18 20:05:07,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=819, PETRI_PLACES=246, PETRI_TRANSITIONS=270} [2022-11-18 20:05:07,499 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 10 predicate places. [2022-11-18 20:05:07,500 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 270 transitions, 819 flow [2022-11-18 20:05:07,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:07,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:07,501 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:07,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:07,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:07,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:07,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:07,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1474687637, now seen corresponding path program 2 times [2022-11-18 20:05:07,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:07,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390127660] [2022-11-18 20:05:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:07,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:07,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:07,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390127660] [2022-11-18 20:05:07,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390127660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:07,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797520472] [2022-11-18 20:05:07,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:05:07,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:07,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:07,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:08,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:05:08,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:05:08,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:05:08,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:05:08,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:05:08,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:05:08,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797520472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:08,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:08,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:05:08,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054218324] [2022-11-18 20:05:08,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:08,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:05:08,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:05:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:05:08,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 329 [2022-11-18 20:05:08,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 270 transitions, 819 flow. Second operand has 18 states, 18 states have (on average 248.61111111111111) internal successors, (4475), 18 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:08,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:08,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 329 [2022-11-18 20:05:08,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:10,251 INFO L130 PetriNetUnfolder]: 225/1907 cut-off events. [2022-11-18 20:05:10,251 INFO L131 PetriNetUnfolder]: For 273/315 co-relation queries the response was YES. [2022-11-18 20:05:10,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 1907 events. 225/1907 cut-off events. For 273/315 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11844 event pairs, 84 based on Foata normal form. 6/1570 useless extension candidates. Maximal degree in co-relation 1686. Up to 71 conditions per place. [2022-11-18 20:05:10,269 INFO L137 encePairwiseOnDemand]: 301/329 looper letters, 178 selfloop transitions, 97 changer transitions 0/439 dead transitions. [2022-11-18 20:05:10,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 439 transitions, 1844 flow [2022-11-18 20:05:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:05:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 20:05:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12286 transitions. [2022-11-18 20:05:10,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7621115315427083 [2022-11-18 20:05:10,295 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12286 transitions. [2022-11-18 20:05:10,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12286 transitions. [2022-11-18 20:05:10,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:10,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12286 transitions. [2022-11-18 20:05:10,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 250.73469387755102) internal successors, (12286), 49 states have internal predecessors, (12286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:10,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 329.0) internal successors, (16450), 50 states have internal predecessors, (16450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:10,366 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 329.0) internal successors, (16450), 50 states have internal predecessors, (16450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:10,366 INFO L175 Difference]: Start difference. First operand has 246 places, 270 transitions, 819 flow. Second operand 49 states and 12286 transitions. [2022-11-18 20:05:10,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 439 transitions, 1844 flow [2022-11-18 20:05:10,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 439 transitions, 1775 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:05:10,376 INFO L231 Difference]: Finished difference. Result has 292 places, 310 transitions, 1162 flow [2022-11-18 20:05:10,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1162, PETRI_PLACES=292, PETRI_TRANSITIONS=310} [2022-11-18 20:05:10,377 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 56 predicate places. [2022-11-18 20:05:10,377 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 310 transitions, 1162 flow [2022-11-18 20:05:10,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 248.61111111111111) internal successors, (4475), 18 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:10,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:10,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:10,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:05:10,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:10,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:10,586 INFO L85 PathProgramCache]: Analyzing trace with hash -111854088, now seen corresponding path program 1 times [2022-11-18 20:05:10,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:10,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075244498] [2022-11-18 20:05:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:10,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075244498] [2022-11-18 20:05:10,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075244498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:10,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:10,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:10,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407125072] [2022-11-18 20:05:10,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:10,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:10,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:10,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:10,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:10,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 329 [2022-11-18 20:05:10,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 310 transitions, 1162 flow. Second operand has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:10,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:10,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 329 [2022-11-18 20:05:10,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:11,191 INFO L130 PetriNetUnfolder]: 372/1956 cut-off events. [2022-11-18 20:05:11,192 INFO L131 PetriNetUnfolder]: For 291/319 co-relation queries the response was YES. [2022-11-18 20:05:11,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 1956 events. 372/1956 cut-off events. For 291/319 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 13725 event pairs, 56 based on Foata normal form. 0/1718 useless extension candidates. Maximal degree in co-relation 3132. Up to 421 conditions per place. [2022-11-18 20:05:11,218 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 30 selfloop transitions, 4 changer transitions 0/327 dead transitions. [2022-11-18 20:05:11,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 327 transitions, 1275 flow [2022-11-18 20:05:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1491 transitions. [2022-11-18 20:05:11,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9063829787234042 [2022-11-18 20:05:11,222 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1491 transitions. [2022-11-18 20:05:11,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1491 transitions. [2022-11-18 20:05:11,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:11,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1491 transitions. [2022-11-18 20:05:11,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.2) internal successors, (1491), 5 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:11,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:11,229 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:11,229 INFO L175 Difference]: Start difference. First operand has 292 places, 310 transitions, 1162 flow. Second operand 5 states and 1491 transitions. [2022-11-18 20:05:11,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 327 transitions, 1275 flow [2022-11-18 20:05:11,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 327 transitions, 1152 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-18 20:05:11,240 INFO L231 Difference]: Finished difference. Result has 284 places, 313 transitions, 1069 flow [2022-11-18 20:05:11,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1069, PETRI_PLACES=284, PETRI_TRANSITIONS=313} [2022-11-18 20:05:11,244 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 48 predicate places. [2022-11-18 20:05:11,244 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 313 transitions, 1069 flow [2022-11-18 20:05:11,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:11,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:11,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:11,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:05:11,245 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:11,246 INFO L85 PathProgramCache]: Analyzing trace with hash -597735967, now seen corresponding path program 1 times [2022-11-18 20:05:11,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:11,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944525279] [2022-11-18 20:05:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:11,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:11,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:11,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944525279] [2022-11-18 20:05:11,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944525279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:11,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:11,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:11,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993400406] [2022-11-18 20:05:11,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:11,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:11,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:11,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:11,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 329 [2022-11-18 20:05:11,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 313 transitions, 1069 flow. Second operand has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:11,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:11,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 329 [2022-11-18 20:05:11,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:12,083 INFO L130 PetriNetUnfolder]: 533/2502 cut-off events. [2022-11-18 20:05:12,085 INFO L131 PetriNetUnfolder]: For 473/473 co-relation queries the response was YES. [2022-11-18 20:05:12,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4130 conditions, 2502 events. 533/2502 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 20449 event pairs, 84 based on Foata normal form. 0/2082 useless extension candidates. Maximal degree in co-relation 3876. Up to 582 conditions per place. [2022-11-18 20:05:12,126 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 29 selfloop transitions, 4 changer transitions 0/329 dead transitions. [2022-11-18 20:05:12,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 329 transitions, 1177 flow [2022-11-18 20:05:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1490 transitions. [2022-11-18 20:05:12,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9057750759878419 [2022-11-18 20:05:12,130 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1490 transitions. [2022-11-18 20:05:12,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1490 transitions. [2022-11-18 20:05:12,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:12,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1490 transitions. [2022-11-18 20:05:12,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:12,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:12,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:12,137 INFO L175 Difference]: Start difference. First operand has 284 places, 313 transitions, 1069 flow. Second operand 5 states and 1490 transitions. [2022-11-18 20:05:12,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 329 transitions, 1177 flow [2022-11-18 20:05:12,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 329 transitions, 1175 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:05:12,146 INFO L231 Difference]: Finished difference. Result has 290 places, 316 transitions, 1097 flow [2022-11-18 20:05:12,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1097, PETRI_PLACES=290, PETRI_TRANSITIONS=316} [2022-11-18 20:05:12,149 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 54 predicate places. [2022-11-18 20:05:12,149 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 316 transitions, 1097 flow [2022-11-18 20:05:12,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:12,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:12,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:12,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:05:12,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1489725109, now seen corresponding path program 1 times [2022-11-18 20:05:12,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:12,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833426433] [2022-11-18 20:05:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:12,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:05:12,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833426433] [2022-11-18 20:05:12,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833426433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:12,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:12,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:05:12,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030384142] [2022-11-18 20:05:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:12,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:05:12,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:05:12,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:05:12,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-18 20:05:12,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 316 transitions, 1097 flow. Second operand has 7 states, 7 states have (on average 259.85714285714283) internal successors, (1819), 7 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:12,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:12,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-18 20:05:12,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:13,698 INFO L130 PetriNetUnfolder]: 841/5273 cut-off events. [2022-11-18 20:05:13,698 INFO L131 PetriNetUnfolder]: For 982/1073 co-relation queries the response was YES. [2022-11-18 20:05:13,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7939 conditions, 5273 events. 841/5273 cut-off events. For 982/1073 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 48524 event pairs, 252 based on Foata normal form. 0/4412 useless extension candidates. Maximal degree in co-relation 6983. Up to 557 conditions per place. [2022-11-18 20:05:13,778 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 181 selfloop transitions, 23 changer transitions 0/401 dead transitions. [2022-11-18 20:05:13,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 401 transitions, 1862 flow [2022-11-18 20:05:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:05:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:05:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2652 transitions. [2022-11-18 20:05:13,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8060790273556231 [2022-11-18 20:05:13,783 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2652 transitions. [2022-11-18 20:05:13,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2652 transitions. [2022-11-18 20:05:13,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:13,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2652 transitions. [2022-11-18 20:05:13,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 265.2) internal successors, (2652), 10 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:13,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:13,796 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:13,796 INFO L175 Difference]: Start difference. First operand has 290 places, 316 transitions, 1097 flow. Second operand 10 states and 2652 transitions. [2022-11-18 20:05:13,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 401 transitions, 1862 flow [2022-11-18 20:05:13,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 401 transitions, 1860 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:05:13,809 INFO L231 Difference]: Finished difference. Result has 300 places, 317 transitions, 1153 flow [2022-11-18 20:05:13,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1153, PETRI_PLACES=300, PETRI_TRANSITIONS=317} [2022-11-18 20:05:13,810 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 64 predicate places. [2022-11-18 20:05:13,810 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 317 transitions, 1153 flow [2022-11-18 20:05:13,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 259.85714285714283) internal successors, (1819), 7 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:13,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:13,811 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:05:13,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 345801704, now seen corresponding path program 1 times [2022-11-18 20:05:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392063473] [2022-11-18 20:05:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:13,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:13,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392063473] [2022-11-18 20:05:13,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392063473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:13,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:13,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:13,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016793982] [2022-11-18 20:05:13,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:13,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:13,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:13,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:13,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 329 [2022-11-18 20:05:13,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 317 transitions, 1153 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:13,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:13,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 329 [2022-11-18 20:05:13,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:15,328 INFO L130 PetriNetUnfolder]: 1513/5924 cut-off events. [2022-11-18 20:05:15,329 INFO L131 PetriNetUnfolder]: For 1617/1617 co-relation queries the response was YES. [2022-11-18 20:05:15,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9472 conditions, 5924 events. 1513/5924 cut-off events. For 1617/1617 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 60427 event pairs, 252 based on Foata normal form. 0/4727 useless extension candidates. Maximal degree in co-relation 8080. Up to 1618 conditions per place. [2022-11-18 20:05:15,391 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 28 selfloop transitions, 4 changer transitions 0/332 dead transitions. [2022-11-18 20:05:15,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 332 transitions, 1253 flow [2022-11-18 20:05:15,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1489 transitions. [2022-11-18 20:05:15,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9051671732522797 [2022-11-18 20:05:15,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1489 transitions. [2022-11-18 20:05:15,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1489 transitions. [2022-11-18 20:05:15,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:15,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1489 transitions. [2022-11-18 20:05:15,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.8) internal successors, (1489), 5 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:15,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:15,404 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:15,404 INFO L175 Difference]: Start difference. First operand has 300 places, 317 transitions, 1153 flow. Second operand 5 states and 1489 transitions. [2022-11-18 20:05:15,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 332 transitions, 1253 flow [2022-11-18 20:05:15,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 332 transitions, 1226 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:05:15,415 INFO L231 Difference]: Finished difference. Result has 302 places, 320 transitions, 1156 flow [2022-11-18 20:05:15,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1156, PETRI_PLACES=302, PETRI_TRANSITIONS=320} [2022-11-18 20:05:15,418 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 66 predicate places. [2022-11-18 20:05:15,419 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 320 transitions, 1156 flow [2022-11-18 20:05:15,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:15,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:15,420 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:15,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:05:15,420 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:15,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:15,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1373005362, now seen corresponding path program 1 times [2022-11-18 20:05:15,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:15,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44706063] [2022-11-18 20:05:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:15,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:15,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:15,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44706063] [2022-11-18 20:05:15,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44706063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:15,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015452776] [2022-11-18 20:05:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:15,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:15,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:15,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:15,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:05:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:15,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:05:16,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:16,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:16,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015452776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:16,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:16,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 20:05:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457003511] [2022-11-18 20:05:16,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:16,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:05:16,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:05:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:05:16,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-18 20:05:16,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 320 transitions, 1156 flow. Second operand has 32 states, 32 states have (on average 274.28125) internal successors, (8777), 32 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:16,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:16,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-18 20:05:16,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:19,201 INFO L130 PetriNetUnfolder]: 271/5146 cut-off events. [2022-11-18 20:05:19,201 INFO L131 PetriNetUnfolder]: For 1597/1597 co-relation queries the response was YES. [2022-11-18 20:05:19,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 5146 events. 271/5146 cut-off events. For 1597/1597 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 44036 event pairs, 0 based on Foata normal form. 32/4848 useless extension candidates. Maximal degree in co-relation 7159. Up to 155 conditions per place. [2022-11-18 20:05:19,255 INFO L137 encePairwiseOnDemand]: 310/329 looper letters, 308 selfloop transitions, 160 changer transitions 0/671 dead transitions. [2022-11-18 20:05:19,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 671 transitions, 3482 flow [2022-11-18 20:05:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:05:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 20:05:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 12408 transitions. [2022-11-18 20:05:19,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-18 20:05:19,269 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 12408 transitions. [2022-11-18 20:05:19,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 12408 transitions. [2022-11-18 20:05:19,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:19,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 12408 transitions. [2022-11-18 20:05:19,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 282.0) internal successors, (12408), 44 states have internal predecessors, (12408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:19,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 329.0) internal successors, (14805), 45 states have internal predecessors, (14805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:19,324 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 329.0) internal successors, (14805), 45 states have internal predecessors, (14805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:19,325 INFO L175 Difference]: Start difference. First operand has 302 places, 320 transitions, 1156 flow. Second operand 44 states and 12408 transitions. [2022-11-18 20:05:19,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 671 transitions, 3482 flow [2022-11-18 20:05:19,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 671 transitions, 3480 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:05:19,347 INFO L231 Difference]: Finished difference. Result has 353 places, 413 transitions, 2172 flow [2022-11-18 20:05:19,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2172, PETRI_PLACES=353, PETRI_TRANSITIONS=413} [2022-11-18 20:05:19,348 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 117 predicate places. [2022-11-18 20:05:19,348 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 413 transitions, 2172 flow [2022-11-18 20:05:19,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 274.28125) internal successors, (8777), 32 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:19,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:19,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:19,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:19,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:19,557 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:19,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:19,557 INFO L85 PathProgramCache]: Analyzing trace with hash -437552810, now seen corresponding path program 1 times [2022-11-18 20:05:19,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:19,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558227110] [2022-11-18 20:05:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:19,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:05:19,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:19,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558227110] [2022-11-18 20:05:19,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558227110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:19,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:19,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:05:19,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237389845] [2022-11-18 20:05:19,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:19,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:05:19,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:05:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:05:19,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-18 20:05:19,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 413 transitions, 2172 flow. Second operand has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:19,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:19,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-18 20:05:19,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:26,144 INFO L130 PetriNetUnfolder]: 5896/27860 cut-off events. [2022-11-18 20:05:26,145 INFO L131 PetriNetUnfolder]: For 7418/7673 co-relation queries the response was YES. [2022-11-18 20:05:26,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48823 conditions, 27860 events. 5896/27860 cut-off events. For 7418/7673 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 324472 event pairs, 2100 based on Foata normal form. 0/25190 useless extension candidates. Maximal degree in co-relation 47052. Up to 3931 conditions per place. [2022-11-18 20:05:26,675 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 218 selfloop transitions, 32 changer transitions 0/477 dead transitions. [2022-11-18 20:05:26,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 477 transitions, 3003 flow [2022-11-18 20:05:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:05:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:05:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2639 transitions. [2022-11-18 20:05:26,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021276595744681 [2022-11-18 20:05:26,681 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2639 transitions. [2022-11-18 20:05:26,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2639 transitions. [2022-11-18 20:05:26,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:26,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2639 transitions. [2022-11-18 20:05:26,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 263.9) internal successors, (2639), 10 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,694 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,695 INFO L175 Difference]: Start difference. First operand has 353 places, 413 transitions, 2172 flow. Second operand 10 states and 2639 transitions. [2022-11-18 20:05:26,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 477 transitions, 3003 flow [2022-11-18 20:05:26,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 477 transitions, 2880 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-18 20:05:26,826 INFO L231 Difference]: Finished difference. Result has 348 places, 414 transitions, 2141 flow [2022-11-18 20:05:26,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2141, PETRI_PLACES=348, PETRI_TRANSITIONS=414} [2022-11-18 20:05:26,828 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 112 predicate places. [2022-11-18 20:05:26,828 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 414 transitions, 2141 flow [2022-11-18 20:05:26,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:26,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:26,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:05:26,830 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash -811293357, now seen corresponding path program 1 times [2022-11-18 20:05:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:26,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151069244] [2022-11-18 20:05:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:26,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:05:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:27,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151069244] [2022-11-18 20:05:27,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151069244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:27,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:27,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:05:27,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504539118] [2022-11-18 20:05:27,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:27,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:05:27,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:05:27,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:05:27,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-18 20:05:27,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 414 transitions, 2141 flow. Second operand has 7 states, 7 states have (on average 260.42857142857144) internal successors, (1823), 7 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:27,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-18 20:05:27,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:31,786 INFO L130 PetriNetUnfolder]: 4411/21050 cut-off events. [2022-11-18 20:05:31,786 INFO L131 PetriNetUnfolder]: For 6701/6911 co-relation queries the response was YES. [2022-11-18 20:05:31,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37871 conditions, 21050 events. 4411/21050 cut-off events. For 6701/6911 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 235970 event pairs, 1710 based on Foata normal form. 75/19445 useless extension candidates. Maximal degree in co-relation 36098. Up to 3302 conditions per place. [2022-11-18 20:05:32,027 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 218 selfloop transitions, 32 changer transitions 0/477 dead transitions. [2022-11-18 20:05:32,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 477 transitions, 2950 flow [2022-11-18 20:05:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:05:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:05:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2639 transitions. [2022-11-18 20:05:32,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021276595744681 [2022-11-18 20:05:32,031 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2639 transitions. [2022-11-18 20:05:32,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2639 transitions. [2022-11-18 20:05:32,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:32,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2639 transitions. [2022-11-18 20:05:32,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 263.9) internal successors, (2639), 10 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:32,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:32,042 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:32,042 INFO L175 Difference]: Start difference. First operand has 348 places, 414 transitions, 2141 flow. Second operand 10 states and 2639 transitions. [2022-11-18 20:05:32,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 477 transitions, 2950 flow [2022-11-18 20:05:32,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 477 transitions, 2906 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:05:32,123 INFO L231 Difference]: Finished difference. Result has 353 places, 414 transitions, 2167 flow [2022-11-18 20:05:32,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2167, PETRI_PLACES=353, PETRI_TRANSITIONS=414} [2022-11-18 20:05:32,124 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 117 predicate places. [2022-11-18 20:05:32,125 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 414 transitions, 2167 flow [2022-11-18 20:05:32,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.42857142857144) internal successors, (1823), 7 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:32,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:32,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:32,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:05:32,126 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash 21152899, now seen corresponding path program 1 times [2022-11-18 20:05:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:32,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999956983] [2022-11-18 20:05:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:05:32,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:32,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999956983] [2022-11-18 20:05:32,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999956983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:32,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:32,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:05:32,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878539547] [2022-11-18 20:05:32,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:32,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:05:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:32,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:05:32,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:05:32,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-18 20:05:32,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 414 transitions, 2167 flow. Second operand has 7 states, 7 states have (on average 260.14285714285717) internal successors, (1821), 7 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:32,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:32,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-18 20:05:32,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:36,804 INFO L130 PetriNetUnfolder]: 3601/17990 cut-off events. [2022-11-18 20:05:36,804 INFO L131 PetriNetUnfolder]: For 8250/8475 co-relation queries the response was YES. [2022-11-18 20:05:36,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31109 conditions, 17990 events. 3601/17990 cut-off events. For 8250/8475 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 203320 event pairs, 1290 based on Foata normal form. 0/15950 useless extension candidates. Maximal degree in co-relation 28809. Up to 2971 conditions per place. [2022-11-18 20:05:36,997 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 277 selfloop transitions, 31 changer transitions 1/536 dead transitions. [2022-11-18 20:05:36,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 536 transitions, 3543 flow [2022-11-18 20:05:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:05:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:05:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2649 transitions. [2022-11-18 20:05:37,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8051671732522796 [2022-11-18 20:05:37,002 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2649 transitions. [2022-11-18 20:05:37,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2649 transitions. [2022-11-18 20:05:37,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:37,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2649 transitions. [2022-11-18 20:05:37,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 264.9) internal successors, (2649), 10 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:37,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:37,012 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:37,013 INFO L175 Difference]: Start difference. First operand has 353 places, 414 transitions, 2167 flow. Second operand 10 states and 2649 transitions. [2022-11-18 20:05:37,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 536 transitions, 3543 flow [2022-11-18 20:05:37,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 536 transitions, 3437 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:05:37,088 INFO L231 Difference]: Finished difference. Result has 354 places, 414 transitions, 2170 flow [2022-11-18 20:05:37,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2170, PETRI_PLACES=354, PETRI_TRANSITIONS=414} [2022-11-18 20:05:37,090 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 118 predicate places. [2022-11-18 20:05:37,090 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 414 transitions, 2170 flow [2022-11-18 20:05:37,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.14285714285717) internal successors, (1821), 7 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:37,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:37,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:37,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:05:37,091 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:37,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1981518659, now seen corresponding path program 1 times [2022-11-18 20:05:37,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:37,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336456112] [2022-11-18 20:05:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:05:37,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:37,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336456112] [2022-11-18 20:05:37,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336456112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:37,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:37,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:05:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007106231] [2022-11-18 20:05:37,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:37,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:05:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:37,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:05:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:05:37,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-18 20:05:37,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 414 transitions, 2170 flow. Second operand has 7 states, 7 states have (on average 260.57142857142856) internal successors, (1824), 7 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:37,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:37,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-18 20:05:37,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:44,496 INFO L130 PetriNetUnfolder]: 7499/32031 cut-off events. [2022-11-18 20:05:44,496 INFO L131 PetriNetUnfolder]: For 11691/11691 co-relation queries the response was YES. [2022-11-18 20:05:44,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54861 conditions, 32031 events. 7499/32031 cut-off events. For 11691/11691 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 393667 event pairs, 2693 based on Foata normal form. 21/28836 useless extension candidates. Maximal degree in co-relation 50817. Up to 5452 conditions per place. [2022-11-18 20:05:44,819 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 196 selfloop transitions, 10 changer transitions 0/433 dead transitions. [2022-11-18 20:05:44,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 433 transitions, 2636 flow [2022-11-18 20:05:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:05:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:05:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2117 transitions. [2022-11-18 20:05:44,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8043313069908815 [2022-11-18 20:05:44,823 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2117 transitions. [2022-11-18 20:05:44,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2117 transitions. [2022-11-18 20:05:44,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:44,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2117 transitions. [2022-11-18 20:05:44,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 264.625) internal successors, (2117), 8 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:44,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:44,831 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:44,831 INFO L175 Difference]: Start difference. First operand has 354 places, 414 transitions, 2170 flow. Second operand 8 states and 2117 transitions. [2022-11-18 20:05:44,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 433 transitions, 2636 flow [2022-11-18 20:05:45,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 433 transitions, 2574 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:05:45,050 INFO L231 Difference]: Finished difference. Result has 353 places, 414 transitions, 2131 flow [2022-11-18 20:05:45,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2131, PETRI_PLACES=353, PETRI_TRANSITIONS=414} [2022-11-18 20:05:45,052 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 117 predicate places. [2022-11-18 20:05:45,053 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 414 transitions, 2131 flow [2022-11-18 20:05:45,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.57142857142856) internal successors, (1824), 7 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:45,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:45,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:45,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:05:45,054 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:05:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:45,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1519458832, now seen corresponding path program 1 times [2022-11-18 20:05:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:45,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788190098] [2022-11-18 20:05:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:45,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:45,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:45,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788190098] [2022-11-18 20:05:45,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788190098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:45,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901432421] [2022-11-18 20:05:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:45,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:45,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:45,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dc15d8-4d3c-472a-9e7a-b4b7d5d8a309/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:05:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:45,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:05:45,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:46,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:46,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901432421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:46,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:46,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-11-18 20:05:46,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228784273] [2022-11-18 20:05:46,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:46,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:05:46,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:46,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:05:46,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:05:46,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 329 [2022-11-18 20:05:46,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 414 transitions, 2131 flow. Second operand has 28 states, 28 states have (on average 235.10714285714286) internal successors, (6583), 28 states have internal predecessors, (6583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:46,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:46,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 329 [2022-11-18 20:05:46,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand