./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8 --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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- 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-2329fc7 [2022-12-13 14:14:26,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:14:26,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:14:26,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:14:26,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:14:26,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:14:26,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:14:26,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:14:26,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:14:26,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:14:26,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:14:26,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:14:26,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:14:26,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:14:26,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:14:26,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:14:26,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:14:26,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:14:26,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:14:26,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:14:26,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:14:26,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:14:26,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:14:26,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:14:26,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:14:26,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:14:26,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:14:26,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:14:26,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:14:26,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:14:26,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:14:26,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:14:26,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:14:26,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:14:26,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:14:26,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:14:26,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:14:26,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:14:26,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:14:26,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:14:26,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:14:26,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 14:14:26,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:14:26,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:14:26,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:14:26,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:14:26,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:14:26,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:14:26,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:14:26,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:14:26,529 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:14:26,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:14:26,529 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:14:26,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:14:26,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:14:26,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:14:26,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:14:26,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:14:26,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:14:26,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:14:26,530 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 14:14:26,530 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:14:26,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:14:26,531 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:14:26,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:14:26,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:14:26,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:14:26,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:14:26,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:14:26,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:14:26,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:14:26,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:14:26,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:14:26,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:14:26,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:14:26,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:14:26,533 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:14:26,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:14:26,533 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:14:26,533 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2022-12-13 14:14:26,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:14:26,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:14:26,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:14:26,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:14:26,740 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:14:26,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-12-13 14:14:29,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:14:29,547 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:14:29,547 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-12-13 14:14:29,567 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/data/f8bf10cf4/535c5f862bf741a7842807448de6d08f/FLAG3ddbed5d4 [2022-12-13 14:14:29,580 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/data/f8bf10cf4/535c5f862bf741a7842807448de6d08f [2022-12-13 14:14:29,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:14:29,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:14:29,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:14:29,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:14:29,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:14:29,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:14:29" (1/1) ... [2022-12-13 14:14:29,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb19a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:29, skipping insertion in model container [2022-12-13 14:14:29,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:14:29" (1/1) ... [2022-12-13 14:14:29,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:14:29,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:14:29,994 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-12-13 14:14:30,002 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 14:14:30,002 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 14:14:30,002 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 14:14:30,003 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 14:14:30,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:14:30,034 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:14:30,059 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-12-13 14:14:30,061 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 14:14:30,062 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 14:14:30,062 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 14:14:30,062 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 14:14:30,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:14:30,108 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:14:30,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30 WrapperNode [2022-12-13 14:14:30,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:14:30,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:14:30,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:14:30,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:14:30,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,146 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 239 [2022-12-13 14:14:30,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:14:30,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:14:30,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:14:30,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:14:30,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,169 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:14:30,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:14:30,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:14:30,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:14:30,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (1/1) ... [2022-12-13 14:14:30,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:14:30,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:14:30,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:14:30,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:14:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:14:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 14:14:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:14:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:14:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:14:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 14:14:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:14:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:14:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 14:14:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 14:14:30,248 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 14:14:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:14:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:14:30,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:14:30,250 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 14:14:30,377 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:14:30,378 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:14:30,686 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:14:30,693 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:14:30,693 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 14:14:30,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:14:30 BoogieIcfgContainer [2022-12-13 14:14:30,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:14:30,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:14:30,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:14:30,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:14:30,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:14:29" (1/3) ... [2022-12-13 14:14:30,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e23fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:14:30, skipping insertion in model container [2022-12-13 14:14:30,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:14:30" (2/3) ... [2022-12-13 14:14:30,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e23fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:14:30, skipping insertion in model container [2022-12-13 14:14:30,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:14:30" (3/3) ... [2022-12-13 14:14:30,701 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2022-12-13 14:14:30,708 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:14:30,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:14:30,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 14:14:30,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:14:30,780 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 14:14:30,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 287 transitions, 582 flow [2022-12-13 14:14:30,865 INFO L130 PetriNetUnfolder]: 29/304 cut-off events. [2022-12-13 14:14:30,866 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 14:14:30,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 304 events. 29/304 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 747 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 167. Up to 4 conditions per place. [2022-12-13 14:14:30,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 287 transitions, 582 flow [2022-12-13 14:14:30,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 284 transitions, 576 flow [2022-12-13 14:14:30,878 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:14:30,886 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 284 transitions, 576 flow [2022-12-13 14:14:30,888 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 284 transitions, 576 flow [2022-12-13 14:14:30,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 284 transitions, 576 flow [2022-12-13 14:14:30,919 INFO L130 PetriNetUnfolder]: 28/301 cut-off events. [2022-12-13 14:14:30,919 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 14:14:30,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 301 events. 28/301 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 738 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 167. Up to 4 conditions per place. [2022-12-13 14:14:30,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 5400 [2022-12-13 14:14:52,099 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 14:15:06,982 WARN L233 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 14:15:28,592 WARN L233 SmtUtils]: Spent 17.46s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 14:15:37,652 WARN L233 SmtUtils]: Spent 9.06s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 14:15:52,520 WARN L233 SmtUtils]: Spent 14.87s on a formula simplification. DAG size of input: 184 DAG size of output: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 14:15:59,843 WARN L233 SmtUtils]: Spent 7.32s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 14:16:00,090 INFO L134 LiptonReduction]: Checked pairs total: 5754 [2022-12-13 14:16:00,090 INFO L136 LiptonReduction]: Total number of compositions: 307 [2022-12-13 14:16:00,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:16:00,107 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;@49435d2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:16:00,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 14:16:00,111 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2022-12-13 14:16:00,111 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:16:00,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:00,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:16:00,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:00,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1112617, now seen corresponding path program 1 times [2022-12-13 14:16:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:00,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884172044] [2022-12-13 14:16:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:00,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:00,221 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:16:00,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43636730] [2022-12-13 14:16:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:00,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:00,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:00,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:00,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:16:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:00,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:16:00,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:00,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:16:00,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:00,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884172044] [2022-12-13 14:16:00,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:16:00,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43636730] [2022-12-13 14:16:00,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43636730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:00,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:00,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:16:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400057041] [2022-12-13 14:16:00,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:00,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:16:00,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:16:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:16:00,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 594 [2022-12-13 14:16:00,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:00,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:16:00,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 594 [2022-12-13 14:16:00,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:16:00,612 INFO L130 PetriNetUnfolder]: 102/232 cut-off events. [2022-12-13 14:16:00,612 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:16:00,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 232 events. 102/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 851 event pairs, 80 based on Foata normal form. 12/134 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2022-12-13 14:16:00,614 INFO L137 encePairwiseOnDemand]: 575/594 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2022-12-13 14:16:00,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 180 flow [2022-12-13 14:16:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:16:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:16:00,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2022-12-13 14:16:00,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4668911335578002 [2022-12-13 14:16:00,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2022-12-13 14:16:00,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2022-12-13 14:16:00,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:16:00,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2022-12-13 14:16:00,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:00,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:00,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:00,643 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 112 flow. Second operand 3 states and 832 transitions. [2022-12-13 14:16:00,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 180 flow [2022-12-13 14:16:00,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:16:00,647 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2022-12-13 14:16:00,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2022-12-13 14:16:00,653 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-12-13 14:16:00,653 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2022-12-13 14:16:00,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:00,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:00,654 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:16:00,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:16:00,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 14:16:00,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1112877, now seen corresponding path program 1 times [2022-12-13 14:16:00,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:00,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343852315] [2022-12-13 14:16:00,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:00,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:00,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:16:00,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308144575] [2022-12-13 14:16:00,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:00,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:00,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:00,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:00,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:16:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:01,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:16:01,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:01,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:16:01,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:01,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343852315] [2022-12-13 14:16:01,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:16:01,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308144575] [2022-12-13 14:16:01,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308144575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:01,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:01,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:16:01,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877792093] [2022-12-13 14:16:01,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:01,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:16:01,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:01,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:16:01,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:16:01,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 594 [2022-12-13 14:16:01,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:16:01,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 594 [2022-12-13 14:16:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:16:01,155 INFO L130 PetriNetUnfolder]: 101/230 cut-off events. [2022-12-13 14:16:01,155 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 14:16:01,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 230 events. 101/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 844 event pairs, 80 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 443. Up to 210 conditions per place. [2022-12-13 14:16:01,156 INFO L137 encePairwiseOnDemand]: 592/594 looper letters, 37 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 14:16:01,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 188 flow [2022-12-13 14:16:01,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:16:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:16:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 818 transitions. [2022-12-13 14:16:01,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4590347923681257 [2022-12-13 14:16:01,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 818 transitions. [2022-12-13 14:16:01,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 818 transitions. [2022-12-13 14:16:01,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:16:01,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 818 transitions. [2022-12-13 14:16:01,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,164 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 818 transitions. [2022-12-13 14:16:01,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 188 flow [2022-12-13 14:16:01,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:16:01,165 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 113 flow [2022-12-13 14:16:01,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-12-13 14:16:01,166 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-12-13 14:16:01,166 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 113 flow [2022-12-13 14:16:01,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,167 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:01,167 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2022-12-13 14:16:01,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:16:01,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 14:16:01,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1069487232, now seen corresponding path program 1 times [2022-12-13 14:16:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:01,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161782457] [2022-12-13 14:16:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:01,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:01,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:01,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161782457] [2022-12-13 14:16:01,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161782457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:01,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:01,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:16:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535052522] [2022-12-13 14:16:01,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:01,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:16:01,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:01,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:16:01,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:16:01,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 594 [2022-12-13 14:16:01,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:16:01,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 594 [2022-12-13 14:16:01,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:16:01,904 INFO L130 PetriNetUnfolder]: 101/232 cut-off events. [2022-12-13 14:16:01,904 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:16:01,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 232 events. 101/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 848 event pairs, 80 based on Foata normal form. 2/129 useless extension candidates. Maximal degree in co-relation 453. Up to 212 conditions per place. [2022-12-13 14:16:01,905 INFO L137 encePairwiseOnDemand]: 587/594 looper letters, 36 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2022-12-13 14:16:01,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 193 flow [2022-12-13 14:16:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:16:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:16:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2022-12-13 14:16:01,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45791245791245794 [2022-12-13 14:16:01,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2022-12-13 14:16:01,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2022-12-13 14:16:01,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:16:01,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2022-12-13 14:16:01,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,911 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 113 flow. Second operand 3 states and 816 transitions. [2022-12-13 14:16:01,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 193 flow [2022-12-13 14:16:01,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:16:01,912 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 138 flow [2022-12-13 14:16:01,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2022-12-13 14:16:01,913 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2022-12-13 14:16:01,913 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 138 flow [2022-12-13 14:16:01,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:01,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:01,914 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2022-12-13 14:16:01,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:16:01,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:01,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:01,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1305664984, now seen corresponding path program 1 times [2022-12-13 14:16:01,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:01,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734303303] [2022-12-13 14:16:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:01,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:01,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:16:01,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131210545] [2022-12-13 14:16:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:01,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:01,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:01,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:01,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:16:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:02,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:16:02,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:16:02,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:16:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:16:02,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:02,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734303303] [2022-12-13 14:16:02,148 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:16:02,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131210545] [2022-12-13 14:16:02,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131210545] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:16:02,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:16:02,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 14:16:02,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745913677] [2022-12-13 14:16:02,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:16:02,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:16:02,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:02,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:16:02,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:16:02,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 594 [2022-12-13 14:16:02,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:02,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:16:02,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 594 [2022-12-13 14:16:02,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:16:02,439 INFO L130 PetriNetUnfolder]: 103/244 cut-off events. [2022-12-13 14:16:02,439 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 14:16:02,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 244 events. 103/244 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 910 event pairs, 80 based on Foata normal form. 3/139 useless extension candidates. Maximal degree in co-relation 508. Up to 210 conditions per place. [2022-12-13 14:16:02,440 INFO L137 encePairwiseOnDemand]: 587/594 looper letters, 40 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2022-12-13 14:16:02,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 282 flow [2022-12-13 14:16:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:16:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:16:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1609 transitions. [2022-12-13 14:16:02,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45145903479236815 [2022-12-13 14:16:02,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1609 transitions. [2022-12-13 14:16:02,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1609 transitions. [2022-12-13 14:16:02,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:16:02,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1609 transitions. [2022-12-13 14:16:02,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.1666666666667) internal successors, (1609), 6 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:02,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:02,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:02,457 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 138 flow. Second operand 6 states and 1609 transitions. [2022-12-13 14:16:02,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 282 flow [2022-12-13 14:16:02,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 277 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 14:16:02,460 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 216 flow [2022-12-13 14:16:02,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2022-12-13 14:16:02,460 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2022-12-13 14:16:02,461 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 216 flow [2022-12-13 14:16:02,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:02,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:02,462 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2022-12-13 14:16:02,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:16:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:02,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1383350776, now seen corresponding path program 1 times [2022-12-13 14:16:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:02,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389374190] [2022-12-13 14:16:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:02,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:02,725 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:16:02,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794412980] [2022-12-13 14:16:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:02,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:02,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:02,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:02,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:16:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:03,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:16:03,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:16:03,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:16:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:16:03,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:03,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389374190] [2022-12-13 14:16:03,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:16:03,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794412980] [2022-12-13 14:16:03,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794412980] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:16:03,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:16:03,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 14:16:03,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789031742] [2022-12-13 14:16:03,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:16:03,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:16:03,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:16:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:16:03,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 594 [2022-12-13 14:16:03,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 260.3333333333333) internal successors, (3124), 12 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:03,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:16:03,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 594 [2022-12-13 14:16:03,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:16:04,137 INFO L130 PetriNetUnfolder]: 103/268 cut-off events. [2022-12-13 14:16:04,137 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 14:16:04,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 268 events. 103/268 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1076 event pairs, 80 based on Foata normal form. 12/167 useless extension candidates. Maximal degree in co-relation 664. Up to 210 conditions per place. [2022-12-13 14:16:04,138 INFO L137 encePairwiseOnDemand]: 587/594 looper letters, 52 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2022-12-13 14:16:04,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 536 flow [2022-12-13 14:16:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 14:16:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 14:16:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3190 transitions. [2022-12-13 14:16:04,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2022-12-13 14:16:04,143 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3190 transitions. [2022-12-13 14:16:04,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3190 transitions. [2022-12-13 14:16:04,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:16:04,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3190 transitions. [2022-12-13 14:16:04,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 265.8333333333333) internal successors, (3190), 12 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:04,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:04,156 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:04,156 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 216 flow. Second operand 12 states and 3190 transitions. [2022-12-13 14:16:04,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 536 flow [2022-12-13 14:16:04,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:16:04,161 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 370 flow [2022-12-13 14:16:04,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=370, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2022-12-13 14:16:04,162 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2022-12-13 14:16:04,162 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 370 flow [2022-12-13 14:16:04,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 260.3333333333333) internal successors, (3124), 12 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:04,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:04,164 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2022-12-13 14:16:04,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:16:04,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:04,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:04,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:04,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1989721016, now seen corresponding path program 2 times [2022-12-13 14:16:04,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:04,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358940484] [2022-12-13 14:16:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:04,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:16:04,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386103835] [2022-12-13 14:16:04,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:16:04,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:04,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:04,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:04,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:16:05,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:16:05,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:16:05,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:16:05,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:16:05,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:16:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:16:05,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:05,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358940484] [2022-12-13 14:16:05,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:16:05,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386103835] [2022-12-13 14:16:05,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386103835] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:16:05,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:16:05,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 14:16:05,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138398531] [2022-12-13 14:16:05,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:16:05,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 14:16:05,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:05,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 14:16:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-12-13 14:16:05,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 594 [2022-12-13 14:16:05,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 370 flow. Second operand has 24 states, 24 states have (on average 260.1666666666667) internal successors, (6244), 24 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:05,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:16:05,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 594 [2022-12-13 14:16:05,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:16:08,078 INFO L130 PetriNetUnfolder]: 103/316 cut-off events. [2022-12-13 14:16:08,079 INFO L131 PetriNetUnfolder]: For 1224/1224 co-relation queries the response was YES. [2022-12-13 14:16:08,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 316 events. 103/316 cut-off events. For 1224/1224 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1217 event pairs, 80 based on Foata normal form. 24/215 useless extension candidates. Maximal degree in co-relation 1051. Up to 210 conditions per place. [2022-12-13 14:16:08,080 INFO L137 encePairwiseOnDemand]: 587/594 looper letters, 76 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2022-12-13 14:16:08,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 1158 flow [2022-12-13 14:16:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 14:16:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 14:16:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6352 transitions. [2022-12-13 14:16:08,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44556677890011226 [2022-12-13 14:16:08,095 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6352 transitions. [2022-12-13 14:16:08,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6352 transitions. [2022-12-13 14:16:08,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:16:08,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6352 transitions. [2022-12-13 14:16:08,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 264.6666666666667) internal successors, (6352), 24 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:08,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 594.0) internal successors, (14850), 25 states have internal predecessors, (14850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:08,116 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 594.0) internal successors, (14850), 25 states have internal predecessors, (14850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:08,116 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 370 flow. Second operand 24 states and 6352 transitions. [2022-12-13 14:16:08,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 1158 flow [2022-12-13 14:16:08,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 106 transitions, 1085 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-12-13 14:16:08,122 INFO L231 Difference]: Finished difference. Result has 103 places, 70 transitions, 638 flow [2022-12-13 14:16:08,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=638, PETRI_PLACES=103, PETRI_TRANSITIONS=70} [2022-12-13 14:16:08,122 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2022-12-13 14:16:08,122 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 70 transitions, 638 flow [2022-12-13 14:16:08,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 260.1666666666667) internal successors, (6244), 24 states have internal predecessors, (6244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:08,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:08,124 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2022-12-13 14:16:08,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 14:16:08,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 14:16:08,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1290190648, now seen corresponding path program 3 times [2022-12-13 14:16:08,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:08,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076668703] [2022-12-13 14:16:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:08,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:16:08,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392612257] [2022-12-13 14:16:08,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:16:08,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:08,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:08,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:08,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:16:09,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 14:16:09,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:16:09,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:16:09,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-12-13 14:16:09,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:16:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-12-13 14:16:09,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:09,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076668703] [2022-12-13 14:16:09,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:16:09,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392612257] [2022-12-13 14:16:09,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392612257] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:16:09,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:16:09,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 14:16:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89877142] [2022-12-13 14:16:09,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:16:09,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:16:09,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:16:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:16:10,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 594 [2022-12-13 14:16:10,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 70 transitions, 638 flow. Second operand has 10 states, 10 states have (on average 253.4) internal successors, (2534), 10 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:10,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:16:10,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 594 [2022-12-13 14:16:10,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:16:13,006 INFO L130 PetriNetUnfolder]: 203/580 cut-off events. [2022-12-13 14:16:13,007 INFO L131 PetriNetUnfolder]: For 949/949 co-relation queries the response was YES. [2022-12-13 14:16:13,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 580 events. 203/580 cut-off events. For 949/949 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2013 event pairs, 160 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 1856. Up to 244 conditions per place. [2022-12-13 14:16:13,009 INFO L137 encePairwiseOnDemand]: 585/594 looper letters, 130 selfloop transitions, 17 changer transitions 0/151 dead transitions. [2022-12-13 14:16:13,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 151 transitions, 1559 flow [2022-12-13 14:16:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:16:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 14:16:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2856 transitions. [2022-12-13 14:16:13,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43709825528007346 [2022-12-13 14:16:13,013 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2856 transitions. [2022-12-13 14:16:13,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2856 transitions. [2022-12-13 14:16:13,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:16:13,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2856 transitions. [2022-12-13 14:16:13,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 259.6363636363636) internal successors, (2856), 11 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:13,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 594.0) internal successors, (7128), 12 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:13,021 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 594.0) internal successors, (7128), 12 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:13,021 INFO L175 Difference]: Start difference. First operand has 103 places, 70 transitions, 638 flow. Second operand 11 states and 2856 transitions. [2022-12-13 14:16:13,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 151 transitions, 1559 flow [2022-12-13 14:16:13,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 151 transitions, 1486 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-12-13 14:16:13,033 INFO L231 Difference]: Finished difference. Result has 107 places, 81 transitions, 794 flow [2022-12-13 14:16:13,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=794, PETRI_PLACES=107, PETRI_TRANSITIONS=81} [2022-12-13 14:16:13,034 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2022-12-13 14:16:13,034 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 81 transitions, 794 flow [2022-12-13 14:16:13,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 253.4) internal successors, (2534), 10 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:13,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:13,035 INFO L209 CegarLoopForPetriNet]: trace histogram [24, 2, 1, 1, 1] [2022-12-13 14:16:13,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:16:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:13,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:13,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1341210589, now seen corresponding path program 1 times [2022-12-13 14:16:13,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:13,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750541370] [2022-12-13 14:16:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:13,471 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:16:13,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562976036] [2022-12-13 14:16:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:13,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:13,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:13,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:13,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:16:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:14,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 5750 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 14:16:14,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:16:15,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:16:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:16:15,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:15,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750541370] [2022-12-13 14:16:15,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:16:15,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562976036] [2022-12-13 14:16:15,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562976036] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:16:15,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:16:15,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-12-13 14:16:15,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536897185] [2022-12-13 14:16:15,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:16:15,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 14:16:15,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:15,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 14:16:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-12-13 14:16:15,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 594 [2022-12-13 14:16:15,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 81 transitions, 794 flow. Second operand has 32 states, 32 states have (on average 260.15625) internal successors, (8325), 32 states have internal predecessors, (8325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:15,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:16:15,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 594 [2022-12-13 14:16:15,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:16:18,323 INFO L130 PetriNetUnfolder]: 203/628 cut-off events. [2022-12-13 14:16:18,323 INFO L131 PetriNetUnfolder]: For 8396/8396 co-relation queries the response was YES. [2022-12-13 14:16:18,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 628 events. 203/628 cut-off events. For 8396/8396 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2194 event pairs, 160 based on Foata normal form. 24/449 useless extension candidates. Maximal degree in co-relation 2216. Up to 412 conditions per place. [2022-12-13 14:16:18,326 INFO L137 encePairwiseOnDemand]: 588/594 looper letters, 119 selfloop transitions, 41 changer transitions 0/164 dead transitions. [2022-12-13 14:16:18,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 164 transitions, 2376 flow [2022-12-13 14:16:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 14:16:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-13 14:16:18,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8426 transitions. [2022-12-13 14:16:18,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44328703703703703 [2022-12-13 14:16:18,334 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8426 transitions. [2022-12-13 14:16:18,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8426 transitions. [2022-12-13 14:16:18,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:16:18,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8426 transitions. [2022-12-13 14:16:18,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 263.3125) internal successors, (8426), 32 states have internal predecessors, (8426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:18,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 594.0) internal successors, (19602), 33 states have internal predecessors, (19602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:18,357 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 594.0) internal successors, (19602), 33 states have internal predecessors, (19602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:18,357 INFO L175 Difference]: Start difference. First operand has 107 places, 81 transitions, 794 flow. Second operand 32 states and 8426 transitions. [2022-12-13 14:16:18,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 164 transitions, 2376 flow [2022-12-13 14:16:18,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 164 transitions, 2346 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-12-13 14:16:18,371 INFO L231 Difference]: Finished difference. Result has 144 places, 92 transitions, 1048 flow [2022-12-13 14:16:18,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1048, PETRI_PLACES=144, PETRI_TRANSITIONS=92} [2022-12-13 14:16:18,371 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2022-12-13 14:16:18,371 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 92 transitions, 1048 flow [2022-12-13 14:16:18,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 260.15625) internal successors, (8325), 32 states have internal predecessors, (8325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:18,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:18,373 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 2, 1, 1, 1] [2022-12-13 14:16:18,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 14:16:18,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:18,574 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:18,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:18,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1351847203, now seen corresponding path program 2 times [2022-12-13 14:16:18,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:18,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448472059] [2022-12-13 14:16:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:18,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:18,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:16:18,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496783416] [2022-12-13 14:16:18,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:16:18,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:18,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:18,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:18,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:16:28,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:16:28,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:16:28,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 7622 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:16:28,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-12-13 14:16:28,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:16:28,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:28,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448472059] [2022-12-13 14:16:28,616 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:16:28,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496783416] [2022-12-13 14:16:28,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496783416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:28,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:28,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:16:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124944345] [2022-12-13 14:16:28,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:28,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:16:28,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:16:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:16:28,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 594 [2022-12-13 14:16:28,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 92 transitions, 1048 flow. Second operand has 7 states, 7 states have (on average 256.14285714285717) internal successors, (1793), 7 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:28,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:16:28,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 594 [2022-12-13 14:16:28,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:16:29,175 INFO L130 PetriNetUnfolder]: 201/568 cut-off events. [2022-12-13 14:16:29,175 INFO L131 PetriNetUnfolder]: For 2683/2683 co-relation queries the response was YES. [2022-12-13 14:16:29,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 568 events. 201/568 cut-off events. For 2683/2683 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1884 event pairs, 160 based on Foata normal form. 59/425 useless extension candidates. Maximal degree in co-relation 1839. Up to 492 conditions per place. [2022-12-13 14:16:29,177 INFO L137 encePairwiseOnDemand]: 588/594 looper letters, 96 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2022-12-13 14:16:29,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 109 transitions, 1350 flow [2022-12-13 14:16:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:16:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:16:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1571 transitions. [2022-12-13 14:16:29,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44079685746352415 [2022-12-13 14:16:29,180 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1571 transitions. [2022-12-13 14:16:29,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1571 transitions. [2022-12-13 14:16:29,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:16:29,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1571 transitions. [2022-12-13 14:16:29,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.8333333333333) internal successors, (1571), 6 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:29,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:29,184 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 594.0) internal successors, (4158), 7 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:29,184 INFO L175 Difference]: Start difference. First operand has 144 places, 92 transitions, 1048 flow. Second operand 6 states and 1571 transitions. [2022-12-13 14:16:29,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 109 transitions, 1350 flow [2022-12-13 14:16:29,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 109 transitions, 1240 flow, removed 5 selfloop flow, removed 23 redundant places. [2022-12-13 14:16:29,196 INFO L231 Difference]: Finished difference. Result has 124 places, 80 transitions, 760 flow [2022-12-13 14:16:29,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=124, PETRI_TRANSITIONS=80} [2022-12-13 14:16:29,197 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2022-12-13 14:16:29,197 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 80 transitions, 760 flow [2022-12-13 14:16:29,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 256.14285714285717) internal successors, (1793), 7 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:29,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:16:29,197 INFO L209 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2022-12-13 14:16:29,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 14:16:29,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:29,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:16:29,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:29,398 INFO L85 PathProgramCache]: Analyzing trace with hash 674010926, now seen corresponding path program 4 times [2022-12-13 14:16:29,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:29,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500450331] [2022-12-13 14:16:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:29,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:29,870 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:16:29,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580062636] [2022-12-13 14:16:29,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 14:16:29,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:29,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:29,872 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:29,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 14:19:07,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 14:19:07,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:19:07,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 14682 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:19:07,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:19:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1153 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-12-13 14:19:07,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:19:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1153 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-12-13 14:19:07,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:19:07,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500450331] [2022-12-13 14:19:07,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:19:07,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580062636] [2022-12-13 14:19:07,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580062636] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:19:07,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:19:07,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-12-13 14:19:07,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152329780] [2022-12-13 14:19:07,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:19:07,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:19:07,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:19:07,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:19:07,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:19:08,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 594 [2022-12-13 14:19:08,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 80 transitions, 760 flow. Second operand has 14 states, 14 states have (on average 254.57142857142858) internal successors, (3564), 14 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:08,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:19:08,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 594 [2022-12-13 14:19:08,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:19:12,278 INFO L130 PetriNetUnfolder]: 202/600 cut-off events. [2022-12-13 14:19:12,278 INFO L131 PetriNetUnfolder]: For 2660/2660 co-relation queries the response was YES. [2022-12-13 14:19:12,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 600 events. 202/600 cut-off events. For 2660/2660 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1866 event pairs, 160 based on Foata normal form. 31/429 useless extension candidates. Maximal degree in co-relation 1982. Up to 258 conditions per place. [2022-12-13 14:19:12,280 INFO L137 encePairwiseOnDemand]: 588/594 looper letters, 173 selfloop transitions, 22 changer transitions 0/199 dead transitions. [2022-12-13 14:19:12,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 199 transitions, 2178 flow [2022-12-13 14:19:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 14:19:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 14:19:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5400 transitions. [2022-12-13 14:19:12,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2022-12-13 14:19:12,285 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5400 transitions. [2022-12-13 14:19:12,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5400 transitions. [2022-12-13 14:19:12,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:19:12,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5400 transitions. [2022-12-13 14:19:12,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 257.14285714285717) internal successors, (5400), 21 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:12,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 594.0) internal successors, (13068), 22 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:12,297 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 594.0) internal successors, (13068), 22 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:12,297 INFO L175 Difference]: Start difference. First operand has 124 places, 80 transitions, 760 flow. Second operand 21 states and 5400 transitions. [2022-12-13 14:19:12,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 199 transitions, 2178 flow [2022-12-13 14:19:12,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 199 transitions, 2138 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-13 14:19:12,310 INFO L231 Difference]: Finished difference. Result has 143 places, 87 transitions, 910 flow [2022-12-13 14:19:12,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=910, PETRI_PLACES=143, PETRI_TRANSITIONS=87} [2022-12-13 14:19:12,311 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2022-12-13 14:19:12,311 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 87 transitions, 910 flow [2022-12-13 14:19:12,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 254.57142857142858) internal successors, (3564), 14 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:12,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:19:12,312 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 14:19:12,512 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forcibly destroying the process [2022-12-13 14:19:12,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 137 [2022-12-13 14:19:12,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 14:19:12,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:19:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:19:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash 289879540, now seen corresponding path program 1 times [2022-12-13 14:19:12,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:19:12,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651320763] [2022-12-13 14:19:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:19:12,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:19:13,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:19:13,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711030234] [2022-12-13 14:19:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:19:13,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:19:13,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:19:13,175 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:19:13,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 14:19:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:19:17,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 21268 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:19:17,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:19:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 0 proven. 2889 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-12-13 14:19:18,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:19:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 0 proven. 2889 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-12-13 14:19:18,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:19:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651320763] [2022-12-13 14:19:18,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:19:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711030234] [2022-12-13 14:19:18,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711030234] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:19:18,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:19:18,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 14:19:18,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960000519] [2022-12-13 14:19:18,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:19:18,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:19:18,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:19:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:19:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:19:18,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 594 [2022-12-13 14:19:18,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 87 transitions, 910 flow. Second operand has 10 states, 10 states have (on average 261.5) internal successors, (2615), 10 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:18,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:19:18,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 594 [2022-12-13 14:19:18,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:19:19,082 INFO L130 PetriNetUnfolder]: 220/625 cut-off events. [2022-12-13 14:19:19,082 INFO L131 PetriNetUnfolder]: For 6830/6830 co-relation queries the response was YES. [2022-12-13 14:19:19,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 625 events. 220/625 cut-off events. For 6830/6830 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 971 event pairs, 80 based on Foata normal form. 5/529 useless extension candidates. Maximal degree in co-relation 3533. Up to 381 conditions per place. [2022-12-13 14:19:19,086 INFO L137 encePairwiseOnDemand]: 589/594 looper letters, 284 selfloop transitions, 35 changer transitions 0/323 dead transitions. [2022-12-13 14:19:19,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 323 transitions, 4328 flow [2022-12-13 14:19:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:19:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 14:19:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2654 transitions. [2022-12-13 14:19:19,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4468013468013468 [2022-12-13 14:19:19,089 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2654 transitions. [2022-12-13 14:19:19,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2654 transitions. [2022-12-13 14:19:19,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:19:19,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2654 transitions. [2022-12-13 14:19:19,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 265.4) internal successors, (2654), 10 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:19,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 594.0) internal successors, (6534), 11 states have internal predecessors, (6534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:19,094 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 594.0) internal successors, (6534), 11 states have internal predecessors, (6534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:19,094 INFO L175 Difference]: Start difference. First operand has 143 places, 87 transitions, 910 flow. Second operand 10 states and 2654 transitions. [2022-12-13 14:19:19,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 323 transitions, 4328 flow [2022-12-13 14:19:19,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 323 transitions, 4187 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-12-13 14:19:19,120 INFO L231 Difference]: Finished difference. Result has 145 places, 112 transitions, 1612 flow [2022-12-13 14:19:19,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1612, PETRI_PLACES=145, PETRI_TRANSITIONS=112} [2022-12-13 14:19:19,120 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2022-12-13 14:19:19,120 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 112 transitions, 1612 flow [2022-12-13 14:19:19,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 261.5) internal successors, (2615), 10 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:19:19,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:19:19,121 INFO L209 CegarLoopForPetriNet]: trace histogram [93, 4, 3, 1, 1] [2022-12-13 14:19:19,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 14:19:19,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:19:19,322 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 14:19:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:19:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash 381522320, now seen corresponding path program 5 times [2022-12-13 14:19:19,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:19:19,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003420277] [2022-12-13 14:19:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:19:19,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:19:20,172 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:19:20,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651965677] [2022-12-13 14:19:20,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 14:19:20,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:19:20,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:19:20,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:19:20,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d81fc1-a9ad-4c37-aee2-45343c7c1258/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process