./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:14:24,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:14:24,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:14:24,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:14:24,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:14:24,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:14:24,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:14:24,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:14:24,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:14:24,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:14:24,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:14:24,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:14:24,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:14:24,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:14:24,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:14:24,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:14:24,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:14:24,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:14:24,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:14:24,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:14:24,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:14:24,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:14:24,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:14:24,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:14:24,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:14:24,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:14:24,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:14:24,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:14:24,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:14:24,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:14:24,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:14:24,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:14:24,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:14:24,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:14:24,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:14:24,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:14:24,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:14:24,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:14:24,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:14:24,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:14:24,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:14:24,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:14:24,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:14:24,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:14:24,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:14:24,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:14:24,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:14:24,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:14:24,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:14:24,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:14:24,642 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:14:24,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:14:24,643 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:14:24,643 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:14:24,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:14:24,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:14:24,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:14:24,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:14:24,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:14:24,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:14:24,645 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:14:24,645 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:14:24,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:14:24,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:14:24,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:14:24,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:14:24,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:14:24,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:14:24,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:14:24,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:14:24,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:14:24,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:14:24,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:14:24,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:14:24,654 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:14:24,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:14:24,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:14:24,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-11-18 20:14:24,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:14:25,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:14:25,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:14:25,023 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:14:25,024 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:14:25,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-18 20:14:25,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/data/d0dd3a680/b8a5431dba1a427484dc6322df65984a/FLAG14d3cb571 [2022-11-18 20:14:25,987 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:14:25,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-18 20:14:26,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/data/d0dd3a680/b8a5431dba1a427484dc6322df65984a/FLAG14d3cb571 [2022-11-18 20:14:26,138 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/data/d0dd3a680/b8a5431dba1a427484dc6322df65984a [2022-11-18 20:14:26,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:14:26,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:14:26,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:14:26,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:14:26,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:14:26,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:14:26" (1/1) ... [2022-11-18 20:14:26,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578e77dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:26, skipping insertion in model container [2022-11-18 20:14:26,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:14:26" (1/1) ... [2022-11-18 20:14:26,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:14:26,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:14:26,901 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-18 20:14:26,922 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:14:26,924 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:14:26,925 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:14:26,927 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:14:26,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:14:27,014 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:14:27,075 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-18 20:14:27,078 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:14:27,079 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:14:27,079 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:14:27,080 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:14:27,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:14:27,198 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:14:27,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27 WrapperNode [2022-11-18 20:14:27,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:14:27,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:14:27,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:14:27,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:14:27,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,313 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 237 [2022-11-18 20:14:27,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:14:27,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:14:27,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:14:27,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:14:27,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,379 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:14:27,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:14:27,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:14:27,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:14:27,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (1/1) ... [2022-11-18 20:14:27,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:14:27,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:27,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:14:27,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:14:27,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:14:27,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:14:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:14:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:14:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:14:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:14:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:14:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:14:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:14:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:14:27,503 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:14:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:14:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:14:27,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:14:27,505 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:14:27,790 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:14:27,793 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:14:28,408 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:14:28,419 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:14:28,431 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 20:14:28,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:14:28 BoogieIcfgContainer [2022-11-18 20:14:28,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:14:28,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:14:28,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:14:28,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:14:28,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:14:26" (1/3) ... [2022-11-18 20:14:28,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fff284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:14:28, skipping insertion in model container [2022-11-18 20:14:28,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:14:27" (2/3) ... [2022-11-18 20:14:28,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fff284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:14:28, skipping insertion in model container [2022-11-18 20:14:28,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:14:28" (3/3) ... [2022-11-18 20:14:28,449 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-11-18 20:14:28,461 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:14:28,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:14:28,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 20:14:28,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:14:28,726 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:14:28,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 284 transitions, 576 flow [2022-11-18 20:14:28,932 INFO L130 PetriNetUnfolder]: 28/301 cut-off events. [2022-11-18 20:14:28,932 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-18 20:14:28,947 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 8. Compared 564 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 164. Up to 4 conditions per place. [2022-11-18 20:14:28,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 284 transitions, 576 flow [2022-11-18 20:14:28,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 281 transitions, 570 flow [2022-11-18 20:14:28,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:14:29,005 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;@7d38db94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:14:29,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-18 20:14:29,032 INFO L130 PetriNetUnfolder]: 2/52 cut-off events. [2022-11-18 20:14:29,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:14:29,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:29,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:29,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:29,041 INFO L85 PathProgramCache]: Analyzing trace with hash -704164271, now seen corresponding path program 1 times [2022-11-18 20:14:29,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:29,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506390242] [2022-11-18 20:14:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:29,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:29,245 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:29,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797307561] [2022-11-18 20:14:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:29,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:29,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:29,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:29,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:14:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:29,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:14:29,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:29,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:14:29,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:29,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506390242] [2022-11-18 20:14:29,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797307561] [2022-11-18 20:14:29,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797307561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:29,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:29,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:14:29,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804462042] [2022-11-18 20:14:29,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:29,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:29,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:29,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 284 [2022-11-18 20:14:29,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 281 transitions, 570 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:29,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:29,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 284 [2022-11-18 20:14:29,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:29,863 INFO L130 PetriNetUnfolder]: 6/335 cut-off events. [2022-11-18 20:14:29,864 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 20:14:29,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 335 events. 6/335 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 581 event pairs, 0 based on Foata normal form. 22/324 useless extension candidates. Maximal degree in co-relation 241. Up to 17 conditions per place. [2022-11-18 20:14:29,868 INFO L137 encePairwiseOnDemand]: 259/284 looper letters, 23 selfloop transitions, 2 changer transitions 2/269 dead transitions. [2022-11-18 20:14:29,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 269 transitions, 596 flow [2022-11-18 20:14:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2022-11-18 20:14:29,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9284037558685446 [2022-11-18 20:14:29,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2022-11-18 20:14:29,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2022-11-18 20:14:29,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:29,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2022-11-18 20:14:29,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:29,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:29,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:29,937 INFO L175 Difference]: Start difference. First operand has 259 places, 281 transitions, 570 flow. Second operand 3 states and 791 transitions. [2022-11-18 20:14:29,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 269 transitions, 596 flow [2022-11-18 20:14:29,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 269 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:14:29,960 INFO L231 Difference]: Finished difference. Result has 261 places, 259 transitions, 540 flow [2022-11-18 20:14:29,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=261, PETRI_TRANSITIONS=259} [2022-11-18 20:14:29,973 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 2 predicate places. [2022-11-18 20:14:29,973 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 259 transitions, 540 flow [2022-11-18 20:14:29,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:29,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:29,976 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:29,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:30,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:30,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:30,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash -354250376, now seen corresponding path program 1 times [2022-11-18 20:14:30,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:30,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134255926] [2022-11-18 20:14:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:30,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:30,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134255926] [2022-11-18 20:14:30,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134255926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:30,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:30,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:30,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408413406] [2022-11-18 20:14:30,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:30,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:14:30,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:30,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:14:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:14:30,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 284 [2022-11-18 20:14:30,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 259 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:30,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:30,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 284 [2022-11-18 20:14:30,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:30,659 INFO L130 PetriNetUnfolder]: 6/417 cut-off events. [2022-11-18 20:14:30,659 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-18 20:14:30,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 417 events. 6/417 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 795 event pairs, 0 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 338. Up to 22 conditions per place. [2022-11-18 20:14:30,663 INFO L137 encePairwiseOnDemand]: 279/284 looper letters, 17 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-11-18 20:14:30,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 265 transitions, 590 flow [2022-11-18 20:14:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:14:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:14:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2022-11-18 20:14:30,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9061032863849765 [2022-11-18 20:14:30,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2022-11-18 20:14:30,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2022-11-18 20:14:30,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:30,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2022-11-18 20:14:30,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:30,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:30,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:30,675 INFO L175 Difference]: Start difference. First operand has 261 places, 259 transitions, 540 flow. Second operand 3 states and 772 transitions. [2022-11-18 20:14:30,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 265 transitions, 590 flow [2022-11-18 20:14:30,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 265 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:14:30,687 INFO L231 Difference]: Finished difference. Result has 261 places, 260 transitions, 554 flow [2022-11-18 20:14:30,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=261, PETRI_TRANSITIONS=260} [2022-11-18 20:14:30,689 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 2 predicate places. [2022-11-18 20:14:30,689 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 260 transitions, 554 flow [2022-11-18 20:14:30,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:30,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:30,690 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:30,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:14:30,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:30,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash 822957862, now seen corresponding path program 1 times [2022-11-18 20:14:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:30,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061004478] [2022-11-18 20:14:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:30,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:30,771 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:30,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173400817] [2022-11-18 20:14:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:30,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:30,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:30,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:30,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:14:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:31,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:14:31,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:31,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:14:31,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:31,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061004478] [2022-11-18 20:14:31,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:31,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173400817] [2022-11-18 20:14:31,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173400817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:31,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:31,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964143434] [2022-11-18 20:14:31,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:14:31,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:14:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:14:31,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-18 20:14:31,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 260 transitions, 554 flow. Second operand has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:31,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:31,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-18 20:14:31,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:31,360 INFO L130 PetriNetUnfolder]: 6/417 cut-off events. [2022-11-18 20:14:31,360 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-18 20:14:31,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 417 events. 6/417 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 802 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 367. Up to 30 conditions per place. [2022-11-18 20:14:31,362 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 23 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-18 20:14:31,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 269 transitions, 628 flow [2022-11-18 20:14:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:14:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:14:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1254 transitions. [2022-11-18 20:14:31,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830985915492958 [2022-11-18 20:14:31,367 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1254 transitions. [2022-11-18 20:14:31,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1254 transitions. [2022-11-18 20:14:31,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:31,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1254 transitions. [2022-11-18 20:14:31,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.8) internal successors, (1254), 5 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:31,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:31,377 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:31,377 INFO L175 Difference]: Start difference. First operand has 261 places, 260 transitions, 554 flow. Second operand 5 states and 1254 transitions. [2022-11-18 20:14:31,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 269 transitions, 628 flow [2022-11-18 20:14:31,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:14:31,385 INFO L231 Difference]: Finished difference. Result has 268 places, 263 transitions, 586 flow [2022-11-18 20:14:31,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=268, PETRI_TRANSITIONS=263} [2022-11-18 20:14:31,386 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 9 predicate places. [2022-11-18 20:14:31,387 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 263 transitions, 586 flow [2022-11-18 20:14:31,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:31,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:31,388 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:31,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:31,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:31,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:31,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:31,602 INFO L85 PathProgramCache]: Analyzing trace with hash -258109504, now seen corresponding path program 1 times [2022-11-18 20:14:31,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:31,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551434492] [2022-11-18 20:14:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:31,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:31,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:31,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078290102] [2022-11-18 20:14:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:31,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:31,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:31,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:31,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:14:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:31,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:14:31,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:31,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:14:31,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:31,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551434492] [2022-11-18 20:14:31,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:31,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078290102] [2022-11-18 20:14:31,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078290102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:31,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:31,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:31,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263150830] [2022-11-18 20:14:31,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:31,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:14:31,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:14:31,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:14:31,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-18 20:14:31,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 263 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:31,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:31,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-18 20:14:31,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:32,156 INFO L130 PetriNetUnfolder]: 6/413 cut-off events. [2022-11-18 20:14:32,156 INFO L131 PetriNetUnfolder]: For 36/37 co-relation queries the response was YES. [2022-11-18 20:14:32,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 413 events. 6/413 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 787 event pairs, 0 based on Foata normal form. 4/395 useless extension candidates. Maximal degree in co-relation 379. Up to 28 conditions per place. [2022-11-18 20:14:32,163 INFO L137 encePairwiseOnDemand]: 280/284 looper letters, 16 selfloop transitions, 5 changer transitions 0/262 dead transitions. [2022-11-18 20:14:32,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 262 transitions, 626 flow [2022-11-18 20:14:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:14:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:14:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2022-11-18 20:14:32,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8794014084507042 [2022-11-18 20:14:32,167 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2022-11-18 20:14:32,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2022-11-18 20:14:32,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:32,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2022-11-18 20:14:32,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:32,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:32,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:32,176 INFO L175 Difference]: Start difference. First operand has 268 places, 263 transitions, 586 flow. Second operand 4 states and 999 transitions. [2022-11-18 20:14:32,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 262 transitions, 626 flow [2022-11-18 20:14:32,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 262 transitions, 617 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:14:32,185 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 588 flow [2022-11-18 20:14:32,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2022-11-18 20:14:32,187 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 9 predicate places. [2022-11-18 20:14:32,188 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 588 flow [2022-11-18 20:14:32,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:32,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:32,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:32,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:32,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:32,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:32,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:32,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1491666954, now seen corresponding path program 1 times [2022-11-18 20:14:32,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:32,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426615405] [2022-11-18 20:14:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:32,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:32,434 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:32,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583510528] [2022-11-18 20:14:32,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:32,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:32,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:32,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:32,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:14:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:32,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:14:32,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:32,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:32,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:32,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426615405] [2022-11-18 20:14:32,872 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:32,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583510528] [2022-11-18 20:14:32,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583510528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:32,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:32,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:14:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940300265] [2022-11-18 20:14:32,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:32,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:14:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:32,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:14:32,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:14:32,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-18 20:14:32,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 247.875) internal successors, (1983), 8 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:32,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:32,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-18 20:14:32,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:33,129 INFO L130 PetriNetUnfolder]: 6/499 cut-off events. [2022-11-18 20:14:33,130 INFO L131 PetriNetUnfolder]: For 52/53 co-relation queries the response was YES. [2022-11-18 20:14:33,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 499 events. 6/499 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 653 event pairs, 0 based on Foata normal form. 6/483 useless extension candidates. Maximal degree in co-relation 506. Up to 22 conditions per place. [2022-11-18 20:14:33,133 INFO L137 encePairwiseOnDemand]: 277/284 looper letters, 29 selfloop transitions, 10 changer transitions 0/280 dead transitions. [2022-11-18 20:14:33,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 280 transitions, 720 flow [2022-11-18 20:14:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:14:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:14:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2246 transitions. [2022-11-18 20:14:33,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.878716744913928 [2022-11-18 20:14:33,139 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2246 transitions. [2022-11-18 20:14:33,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2246 transitions. [2022-11-18 20:14:33,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:33,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2246 transitions. [2022-11-18 20:14:33,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 249.55555555555554) internal successors, (2246), 9 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:33,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:33,156 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:33,156 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 588 flow. Second operand 9 states and 2246 transitions. [2022-11-18 20:14:33,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 280 transitions, 720 flow [2022-11-18 20:14:33,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 280 transitions, 707 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:14:33,165 INFO L231 Difference]: Finished difference. Result has 279 places, 266 transitions, 638 flow [2022-11-18 20:14:33,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=638, PETRI_PLACES=279, PETRI_TRANSITIONS=266} [2022-11-18 20:14:33,166 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 20 predicate places. [2022-11-18 20:14:33,166 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 266 transitions, 638 flow [2022-11-18 20:14:33,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 247.875) internal successors, (1983), 8 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:33,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:33,168 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:33,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:33,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:33,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:33,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash -831855898, now seen corresponding path program 1 times [2022-11-18 20:14:33,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:33,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793572349] [2022-11-18 20:14:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:33,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:33,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:33,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28340956] [2022-11-18 20:14:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:33,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:33,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:33,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:33,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:14:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:33,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:14:33,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:34,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:34,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:34,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793572349] [2022-11-18 20:14:34,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:34,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28340956] [2022-11-18 20:14:34,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28340956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:34,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:34,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:14:34,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091182886] [2022-11-18 20:14:34,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:14:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:14:34,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:14:34,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-18 20:14:34,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 266 transitions, 638 flow. Second operand has 14 states, 14 states have (on average 248.64285714285714) internal successors, (3481), 14 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:34,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:34,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-18 20:14:34,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:34,834 INFO L130 PetriNetUnfolder]: 11/790 cut-off events. [2022-11-18 20:14:34,835 INFO L131 PetriNetUnfolder]: For 134/136 co-relation queries the response was YES. [2022-11-18 20:14:34,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 790 events. 11/790 cut-off events. For 134/136 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1838 event pairs, 0 based on Foata normal form. 4/750 useless extension candidates. Maximal degree in co-relation 765. Up to 19 conditions per place. [2022-11-18 20:14:34,839 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 37 selfloop transitions, 16 changer transitions 0/294 dead transitions. [2022-11-18 20:14:34,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 294 transitions, 854 flow [2022-11-18 20:14:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:14:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:14:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3730 transitions. [2022-11-18 20:14:34,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755868544600939 [2022-11-18 20:14:34,857 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3730 transitions. [2022-11-18 20:14:34,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3730 transitions. [2022-11-18 20:14:34,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:34,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3730 transitions. [2022-11-18 20:14:34,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 248.66666666666666) internal successors, (3730), 15 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:34,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:34,887 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:34,888 INFO L175 Difference]: Start difference. First operand has 279 places, 266 transitions, 638 flow. Second operand 15 states and 3730 transitions. [2022-11-18 20:14:34,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 294 transitions, 854 flow [2022-11-18 20:14:34,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 294 transitions, 836 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 20:14:34,902 INFO L231 Difference]: Finished difference. Result has 288 places, 270 transitions, 687 flow [2022-11-18 20:14:34,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=687, PETRI_PLACES=288, PETRI_TRANSITIONS=270} [2022-11-18 20:14:34,907 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 29 predicate places. [2022-11-18 20:14:34,907 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 270 transitions, 687 flow [2022-11-18 20:14:34,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.64285714285714) internal successors, (3481), 14 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:34,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:34,911 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:34,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:35,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:35,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1801372618, now seen corresponding path program 2 times [2022-11-18 20:14:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:35,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99745495] [2022-11-18 20:14:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:35,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:35,183 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:35,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771484] [2022-11-18 20:14:35,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:14:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:35,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:35,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:14:35,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:14:35,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:14:35,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:14:35,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 20:14:35,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:14:35,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:35,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99745495] [2022-11-18 20:14:35,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:35,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771484] [2022-11-18 20:14:35,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:35,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:35,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:35,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065823560] [2022-11-18 20:14:35,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:35,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:14:35,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:35,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:14:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:14:35,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-18 20:14:35,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 270 transitions, 687 flow. Second operand has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:35,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:35,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-18 20:14:35,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:35,928 INFO L130 PetriNetUnfolder]: 11/790 cut-off events. [2022-11-18 20:14:35,928 INFO L131 PetriNetUnfolder]: For 135/137 co-relation queries the response was YES. [2022-11-18 20:14:35,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 790 events. 11/790 cut-off events. For 135/137 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1836 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 771. Up to 50 conditions per place. [2022-11-18 20:14:35,932 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 29 selfloop transitions, 5 changer transitions 0/282 dead transitions. [2022-11-18 20:14:35,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 282 transitions, 779 flow [2022-11-18 20:14:35,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:14:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:14:35,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1245 transitions. [2022-11-18 20:14:35,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8767605633802817 [2022-11-18 20:14:35,939 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1245 transitions. [2022-11-18 20:14:35,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1245 transitions. [2022-11-18 20:14:35,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:35,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1245 transitions. [2022-11-18 20:14:35,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:35,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:35,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:35,949 INFO L175 Difference]: Start difference. First operand has 288 places, 270 transitions, 687 flow. Second operand 5 states and 1245 transitions. [2022-11-18 20:14:35,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 282 transitions, 779 flow [2022-11-18 20:14:35,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 282 transitions, 720 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-18 20:14:35,958 INFO L231 Difference]: Finished difference. Result has 283 places, 273 transitions, 662 flow [2022-11-18 20:14:35,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=662, PETRI_PLACES=283, PETRI_TRANSITIONS=273} [2022-11-18 20:14:35,960 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 24 predicate places. [2022-11-18 20:14:35,960 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 273 transitions, 662 flow [2022-11-18 20:14:35,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.75) internal successors, (979), 4 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:35,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:35,962 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:35,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:36,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:36,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:36,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:36,169 INFO L85 PathProgramCache]: Analyzing trace with hash 7976934, now seen corresponding path program 1 times [2022-11-18 20:14:36,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:36,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724589011] [2022-11-18 20:14:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:36,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:36,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:36,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251924850] [2022-11-18 20:14:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:36,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:36,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:36,215 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:36,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:14:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:36,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:14:36,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:36,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:14:37,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:37,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724589011] [2022-11-18 20:14:37,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:37,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251924850] [2022-11-18 20:14:37,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251924850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:37,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:37,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:14:37,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922639862] [2022-11-18 20:14:37,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:37,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:14:37,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:14:37,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:14:37,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-18 20:14:37,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 273 transitions, 662 flow. Second operand has 16 states, 16 states have (on average 248.6875) internal successors, (3979), 16 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:37,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:37,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-18 20:14:37,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:37,853 INFO L130 PetriNetUnfolder]: 6/833 cut-off events. [2022-11-18 20:14:37,853 INFO L131 PetriNetUnfolder]: For 122/123 co-relation queries the response was YES. [2022-11-18 20:14:37,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 833 events. 6/833 cut-off events. For 122/123 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 669 event pairs, 0 based on Foata normal form. 8/823 useless extension candidates. Maximal degree in co-relation 1008. Up to 20 conditions per place. [2022-11-18 20:14:37,858 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 60 selfloop transitions, 22 changer transitions 0/326 dead transitions. [2022-11-18 20:14:37,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 326 transitions, 1019 flow [2022-11-18 20:14:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:14:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:14:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5230 transitions. [2022-11-18 20:14:37,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769282360831656 [2022-11-18 20:14:37,873 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5230 transitions. [2022-11-18 20:14:37,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5230 transitions. [2022-11-18 20:14:37,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:37,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5230 transitions. [2022-11-18 20:14:37,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 249.04761904761904) internal successors, (5230), 21 states have internal predecessors, (5230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:37,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:37,906 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:37,907 INFO L175 Difference]: Start difference. First operand has 283 places, 273 transitions, 662 flow. Second operand 21 states and 5230 transitions. [2022-11-18 20:14:37,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 326 transitions, 1019 flow [2022-11-18 20:14:37,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 326 transitions, 1009 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-18 20:14:37,917 INFO L231 Difference]: Finished difference. Result has 307 places, 282 transitions, 772 flow [2022-11-18 20:14:37,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=772, PETRI_PLACES=307, PETRI_TRANSITIONS=282} [2022-11-18 20:14:37,921 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 48 predicate places. [2022-11-18 20:14:37,922 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 282 transitions, 772 flow [2022-11-18 20:14:37,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 248.6875) internal successors, (3979), 16 states have internal predecessors, (3979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:37,924 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:37,924 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:37,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:38,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:14:38,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1012891750, now seen corresponding path program 2 times [2022-11-18 20:14:38,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:38,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456277234] [2022-11-18 20:14:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:38,224 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:38,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043758658] [2022-11-18 20:14:38,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:14:38,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:38,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:38,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:38,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:14:38,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:14:38,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:14:38,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:14:38,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-18 20:14:39,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:14:39,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:39,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456277234] [2022-11-18 20:14:39,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:39,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043758658] [2022-11-18 20:14:39,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043758658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:14:39,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:14:39,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:14:39,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162118950] [2022-11-18 20:14:39,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:14:39,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:14:39,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:39,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:14:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:14:39,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-18 20:14:39,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 282 transitions, 772 flow. Second operand has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:39,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:39,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-18 20:14:39,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:39,417 INFO L130 PetriNetUnfolder]: 6/831 cut-off events. [2022-11-18 20:14:39,417 INFO L131 PetriNetUnfolder]: For 186/187 co-relation queries the response was YES. [2022-11-18 20:14:39,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 831 events. 6/831 cut-off events. For 186/187 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 662 event pairs, 0 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 1009. Up to 80 conditions per place. [2022-11-18 20:14:39,421 INFO L137 encePairwiseOnDemand]: 280/284 looper letters, 18 selfloop transitions, 5 changer transitions 0/280 dead transitions. [2022-11-18 20:14:39,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 280 transitions, 808 flow [2022-11-18 20:14:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:14:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:14:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 989 transitions. [2022-11-18 20:14:39,425 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8705985915492958 [2022-11-18 20:14:39,426 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 989 transitions. [2022-11-18 20:14:39,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 989 transitions. [2022-11-18 20:14:39,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:39,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 989 transitions. [2022-11-18 20:14:39,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:39,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:39,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:39,435 INFO L175 Difference]: Start difference. First operand has 307 places, 282 transitions, 772 flow. Second operand 4 states and 989 transitions. [2022-11-18 20:14:39,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 280 transitions, 808 flow [2022-11-18 20:14:39,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 280 transitions, 785 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 20:14:39,445 INFO L231 Difference]: Finished difference. Result has 298 places, 280 transitions, 749 flow [2022-11-18 20:14:39,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=749, PETRI_PLACES=298, PETRI_TRANSITIONS=280} [2022-11-18 20:14:39,447 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 39 predicate places. [2022-11-18 20:14:39,448 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 280 transitions, 749 flow [2022-11-18 20:14:39,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:39,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:39,449 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:39,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 20:14:39,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:39,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:39,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1575946510, now seen corresponding path program 1 times [2022-11-18 20:14:39,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:39,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277071675] [2022-11-18 20:14:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:39,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:39,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:39,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080016822] [2022-11-18 20:14:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:39,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:39,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:39,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:39,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:14:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:40,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:14:40,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:14:41,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:14:42,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:42,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277071675] [2022-11-18 20:14:42,151 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:42,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080016822] [2022-11-18 20:14:42,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080016822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:42,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:42,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 20:14:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022216679] [2022-11-18 20:14:42,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:42,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:14:42,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:42,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:14:42,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:14:42,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-18 20:14:42,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 280 transitions, 749 flow. Second operand has 32 states, 32 states have (on average 249.4375) internal successors, (7982), 32 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:42,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:42,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-18 20:14:42,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:43,864 INFO L130 PetriNetUnfolder]: 6/1503 cut-off events. [2022-11-18 20:14:43,865 INFO L131 PetriNetUnfolder]: For 731/732 co-relation queries the response was YES. [2022-11-18 20:14:43,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 1503 events. 6/1503 cut-off events. For 731/732 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 702 event pairs, 0 based on Foata normal form. 16/1501 useless extension candidates. Maximal degree in co-relation 2123. Up to 38 conditions per place. [2022-11-18 20:14:43,872 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 124 selfloop transitions, 46 changer transitions 0/412 dead transitions. [2022-11-18 20:14:43,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 412 transitions, 1685 flow [2022-11-18 20:14:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 20:14:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 20:14:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 11202 transitions. [2022-11-18 20:14:43,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765258215962441 [2022-11-18 20:14:43,901 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 11202 transitions. [2022-11-18 20:14:43,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 11202 transitions. [2022-11-18 20:14:43,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:43,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 11202 transitions. [2022-11-18 20:14:43,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 248.93333333333334) internal successors, (11202), 45 states have internal predecessors, (11202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:43,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 284.0) internal successors, (13064), 46 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:43,972 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 284.0) internal successors, (13064), 46 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:43,973 INFO L175 Difference]: Start difference. First operand has 298 places, 280 transitions, 749 flow. Second operand 45 states and 11202 transitions. [2022-11-18 20:14:43,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 412 transitions, 1685 flow [2022-11-18 20:14:43,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 412 transitions, 1675 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:14:43,986 INFO L231 Difference]: Finished difference. Result has 348 places, 305 transitions, 1062 flow [2022-11-18 20:14:43,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1062, PETRI_PLACES=348, PETRI_TRANSITIONS=305} [2022-11-18 20:14:43,988 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 89 predicate places. [2022-11-18 20:14:43,988 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 305 transitions, 1062 flow [2022-11-18 20:14:43,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 249.4375) internal successors, (7982), 32 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:43,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:43,992 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:44,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:44,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:14:44,202 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:44,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:44,203 INFO L85 PathProgramCache]: Analyzing trace with hash -162326514, now seen corresponding path program 2 times [2022-11-18 20:14:44,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:44,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324044250] [2022-11-18 20:14:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:44,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:44,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:44,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411056002] [2022-11-18 20:14:44,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:14:44,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:44,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:44,357 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:44,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:14:45,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:14:45,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:14:45,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2828 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 20:14:45,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:14:47,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:14:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:49,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324044250] [2022-11-18 20:14:49,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:49,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411056002] [2022-11-18 20:14:49,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411056002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:49,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:49,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 20:14:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955834259] [2022-11-18 20:14:49,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:49,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 20:14:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:49,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 20:14:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 20:14:49,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 284 [2022-11-18 20:14:49,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 305 transitions, 1062 flow. Second operand has 61 states, 61 states have (on average 249.54098360655738) internal successors, (15222), 61 states have internal predecessors, (15222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:49,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:49,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 284 [2022-11-18 20:14:49,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:54,160 INFO L130 PetriNetUnfolder]: 6/2763 cut-off events. [2022-11-18 20:14:54,160 INFO L131 PetriNetUnfolder]: For 4819/4820 co-relation queries the response was YES. [2022-11-18 20:14:54,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4604 conditions, 2763 events. 6/2763 cut-off events. For 4819/4820 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 778 event pairs, 0 based on Foata normal form. 30/2775 useless extension candidates. Maximal degree in co-relation 4454. Up to 98 conditions per place. [2022-11-18 20:14:54,170 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 244 selfloop transitions, 91 changer transitions 0/577 dead transitions. [2022-11-18 20:14:54,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 577 transitions, 3174 flow [2022-11-18 20:14:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 20:14:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 20:14:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 22399 transitions. [2022-11-18 20:14:54,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763302034428795 [2022-11-18 20:14:54,203 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 22399 transitions. [2022-11-18 20:14:54,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 22399 transitions. [2022-11-18 20:14:54,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:54,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 22399 transitions. [2022-11-18 20:14:54,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 248.87777777777777) internal successors, (22399), 90 states have internal predecessors, (22399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 284.0) internal successors, (25844), 91 states have internal predecessors, (25844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,296 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 284.0) internal successors, (25844), 91 states have internal predecessors, (25844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,296 INFO L175 Difference]: Start difference. First operand has 348 places, 305 transitions, 1062 flow. Second operand 90 states and 22399 transitions. [2022-11-18 20:14:54,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 577 transitions, 3174 flow [2022-11-18 20:14:54,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 577 transitions, 3087 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-18 20:14:54,326 INFO L231 Difference]: Finished difference. Result has 435 places, 351 transitions, 1694 flow [2022-11-18 20:14:54,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1694, PETRI_PLACES=435, PETRI_TRANSITIONS=351} [2022-11-18 20:14:54,328 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 176 predicate places. [2022-11-18 20:14:54,328 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 351 transitions, 1694 flow [2022-11-18 20:14:54,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 249.54098360655738) internal successors, (15222), 61 states have internal predecessors, (15222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:54,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:14:54,332 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:54,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:54,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:14:54,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:14:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:54,545 INFO L85 PathProgramCache]: Analyzing trace with hash -867060484, now seen corresponding path program 3 times [2022-11-18 20:14:54,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:54,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096234878] [2022-11-18 20:14:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:54,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:54,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:14:54,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364791989] [2022-11-18 20:14:54,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:14:54,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:54,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:54,846 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:54,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:14:55,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:14:55,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:14:55,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:14:55,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-18 20:14:56,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-18 20:14:56,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:56,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096234878] [2022-11-18 20:14:56,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:14:56,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364791989] [2022-11-18 20:14:56,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364791989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:56,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:56,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-11-18 20:14:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123842010] [2022-11-18 20:14:56,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:56,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:14:56,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:56,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:14:56,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:14:56,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 284 [2022-11-18 20:14:56,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 351 transitions, 1694 flow. Second operand has 11 states, 11 states have (on average 241.63636363636363) internal successors, (2658), 11 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:56,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:14:56,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 284 [2022-11-18 20:14:56,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:14:59,942 INFO L130 PetriNetUnfolder]: 6/2734 cut-off events. [2022-11-18 20:14:59,943 INFO L131 PetriNetUnfolder]: For 3187/3188 co-relation queries the response was YES. [2022-11-18 20:14:59,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 2734 events. 6/2734 cut-off events. For 3187/3188 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 686 event pairs, 0 based on Foata normal form. 29/2745 useless extension candidates. Maximal degree in co-relation 4602. Up to 310 conditions per place. [2022-11-18 20:14:59,957 INFO L137 encePairwiseOnDemand]: 275/284 looper letters, 39 selfloop transitions, 103 changer transitions 0/374 dead transitions. [2022-11-18 20:14:59,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 374 transitions, 2034 flow [2022-11-18 20:14:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:14:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:14:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3136 transitions. [2022-11-18 20:14:59,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8494041170097508 [2022-11-18 20:14:59,963 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3136 transitions. [2022-11-18 20:14:59,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3136 transitions. [2022-11-18 20:14:59,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:14:59,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3136 transitions. [2022-11-18 20:14:59,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 241.23076923076923) internal successors, (3136), 13 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:59,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 284.0) internal successors, (3976), 14 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:59,979 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 284.0) internal successors, (3976), 14 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:14:59,979 INFO L175 Difference]: Start difference. First operand has 435 places, 351 transitions, 1694 flow. Second operand 13 states and 3136 transitions. [2022-11-18 20:14:59,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 374 transitions, 2034 flow [2022-11-18 20:15:00,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 374 transitions, 1913 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 20:15:00,018 INFO L231 Difference]: Finished difference. Result has 406 places, 353 transitions, 1830 flow [2022-11-18 20:15:00,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1830, PETRI_PLACES=406, PETRI_TRANSITIONS=353} [2022-11-18 20:15:00,020 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 147 predicate places. [2022-11-18 20:15:00,020 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 353 transitions, 1830 flow [2022-11-18 20:15:00,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.63636363636363) internal successors, (2658), 11 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:00,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:00,023 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:00,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:00,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:15:00,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:15:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1109070675, now seen corresponding path program 1 times [2022-11-18 20:15:00,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:00,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843287793] [2022-11-18 20:15:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:00,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:00,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:15:00,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860872724] [2022-11-18 20:15:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:00,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:00,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:00,498 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:00,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:15:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:07,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 5334 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:15:07,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 19200 backedges. 1335 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 20:15:10,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:15:10,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:10,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843287793] [2022-11-18 20:15:10,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:15:10,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860872724] [2022-11-18 20:15:10,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860872724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:10,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:10,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:15:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135399144] [2022-11-18 20:15:10,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:10,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:15:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:15:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:15:10,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 284 [2022-11-18 20:15:10,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 353 transitions, 1830 flow. Second operand has 9 states, 9 states have (on average 236.33333333333334) internal successors, (2127), 9 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:10,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:10,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 284 [2022-11-18 20:15:10,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:13,203 INFO L130 PetriNetUnfolder]: 9/2899 cut-off events. [2022-11-18 20:15:13,203 INFO L131 PetriNetUnfolder]: For 3884/3886 co-relation queries the response was YES. [2022-11-18 20:15:13,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5069 conditions, 2899 events. 9/2899 cut-off events. For 3884/3886 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 890 event pairs, 0 based on Foata normal form. 29/2892 useless extension candidates. Maximal degree in co-relation 4778. Up to 307 conditions per place. [2022-11-18 20:15:13,224 INFO L137 encePairwiseOnDemand]: 274/284 looper letters, 141 selfloop transitions, 105 changer transitions 0/473 dead transitions. [2022-11-18 20:15:13,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 473 transitions, 3624 flow [2022-11-18 20:15:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:15:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:15:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3079 transitions. [2022-11-18 20:15:13,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8339653304442037 [2022-11-18 20:15:13,232 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3079 transitions. [2022-11-18 20:15:13,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3079 transitions. [2022-11-18 20:15:13,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:13,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3079 transitions. [2022-11-18 20:15:13,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 236.84615384615384) internal successors, (3079), 13 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:13,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 284.0) internal successors, (3976), 14 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:13,245 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 284.0) internal successors, (3976), 14 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:13,245 INFO L175 Difference]: Start difference. First operand has 406 places, 353 transitions, 1830 flow. Second operand 13 states and 3079 transitions. [2022-11-18 20:15:13,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 473 transitions, 3624 flow [2022-11-18 20:15:13,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 473 transitions, 3487 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:15:13,296 INFO L231 Difference]: Finished difference. Result has 416 places, 449 transitions, 3470 flow [2022-11-18 20:15:13,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3470, PETRI_PLACES=416, PETRI_TRANSITIONS=449} [2022-11-18 20:15:13,299 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 157 predicate places. [2022-11-18 20:15:13,299 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 449 transitions, 3470 flow [2022-11-18 20:15:13,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 236.33333333333334) internal successors, (2127), 9 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:13,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:13,300 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:13,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:13,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:15:13,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:15:13,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:13,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2019109336, now seen corresponding path program 1 times [2022-11-18 20:15:13,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:13,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565303897] [2022-11-18 20:15:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:13,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:13,746 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:15:13,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607281291] [2022-11-18 20:15:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:13,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:13,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:13,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:13,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:15:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:15,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 5270 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:15:15,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 20:15:18,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 20:15:20,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:20,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565303897] [2022-11-18 20:15:20,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:15:20,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607281291] [2022-11-18 20:15:20,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607281291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:20,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:20,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:15:20,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106926419] [2022-11-18 20:15:20,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:15:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:15:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:15:20,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-18 20:15:20,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 449 transitions, 3470 flow. Second operand has 8 states, 8 states have (on average 245.75) internal successors, (1966), 8 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:20,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:20,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-18 20:15:20,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:24,643 INFO L130 PetriNetUnfolder]: 7/3953 cut-off events. [2022-11-18 20:15:24,643 INFO L131 PetriNetUnfolder]: For 7848/7849 co-relation queries the response was YES. [2022-11-18 20:15:24,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7117 conditions, 3953 events. 7/3953 cut-off events. For 7848/7849 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 262 event pairs, 0 based on Foata normal form. 3/3938 useless extension candidates. Maximal degree in co-relation 6943. Up to 144 conditions per place. [2022-11-18 20:15:24,656 INFO L137 encePairwiseOnDemand]: 277/284 looper letters, 34 selfloop transitions, 9 changer transitions 0/470 dead transitions. [2022-11-18 20:15:24,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 470 transitions, 3620 flow [2022-11-18 20:15:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:15:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:15:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2224 transitions. [2022-11-18 20:15:24,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8701095461658842 [2022-11-18 20:15:24,661 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2224 transitions. [2022-11-18 20:15:24,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2224 transitions. [2022-11-18 20:15:24,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:24,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2224 transitions. [2022-11-18 20:15:24,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 247.11111111111111) internal successors, (2224), 9 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:24,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:24,670 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 284.0) internal successors, (2840), 10 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:24,670 INFO L175 Difference]: Start difference. First operand has 416 places, 449 transitions, 3470 flow. Second operand 9 states and 2224 transitions. [2022-11-18 20:15:24,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 470 transitions, 3620 flow [2022-11-18 20:15:24,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 470 transitions, 3598 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-18 20:15:24,746 INFO L231 Difference]: Finished difference. Result has 422 places, 453 transitions, 3517 flow [2022-11-18 20:15:24,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3452, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3517, PETRI_PLACES=422, PETRI_TRANSITIONS=453} [2022-11-18 20:15:24,747 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 163 predicate places. [2022-11-18 20:15:24,747 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 453 transitions, 3517 flow [2022-11-18 20:15:24,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 245.75) internal successors, (1966), 8 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:24,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:24,750 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:24,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:24,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:15:24,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:15:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:24,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2118919182, now seen corresponding path program 1 times [2022-11-18 20:15:24,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:24,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261475259] [2022-11-18 20:15:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:24,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:25,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:15:25,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471538759] [2022-11-18 20:15:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:25,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:25,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:25,641 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:25,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:15:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:31,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 15238 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:15:31,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 20:15:38,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 20:15:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:45,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261475259] [2022-11-18 20:15:45,202 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:15:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471538759] [2022-11-18 20:15:45,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471538759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:45,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:45,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:15:45,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106035970] [2022-11-18 20:15:45,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:45,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:15:45,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:15:45,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:15:45,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-18 20:15:45,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 453 transitions, 3517 flow. Second operand has 14 states, 14 states have (on average 246.92857142857142) internal successors, (3457), 14 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:45,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:45,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-18 20:15:45,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:51,334 INFO L130 PetriNetUnfolder]: 11/5383 cut-off events. [2022-11-18 20:15:51,335 INFO L131 PetriNetUnfolder]: For 10616/10618 co-relation queries the response was YES. [2022-11-18 20:15:51,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9642 conditions, 5383 events. 11/5383 cut-off events. For 10616/10618 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 877 event pairs, 0 based on Foata normal form. 2/5349 useless extension candidates. Maximal degree in co-relation 9343. Up to 192 conditions per place. [2022-11-18 20:15:51,357 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 43 selfloop transitions, 14 changer transitions 0/484 dead transitions. [2022-11-18 20:15:51,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 484 transitions, 3733 flow [2022-11-18 20:15:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:15:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:15:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3689 transitions. [2022-11-18 20:15:51,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.865962441314554 [2022-11-18 20:15:51,365 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3689 transitions. [2022-11-18 20:15:51,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3689 transitions. [2022-11-18 20:15:51,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:51,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3689 transitions. [2022-11-18 20:15:51,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 245.93333333333334) internal successors, (3689), 15 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:51,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:51,381 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 284.0) internal successors, (4544), 16 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:51,382 INFO L175 Difference]: Start difference. First operand has 422 places, 453 transitions, 3517 flow. Second operand 15 states and 3689 transitions. [2022-11-18 20:15:51,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 484 transitions, 3733 flow [2022-11-18 20:15:51,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 484 transitions, 3717 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 20:15:51,472 INFO L231 Difference]: Finished difference. Result has 431 places, 456 transitions, 3562 flow [2022-11-18 20:15:51,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3497, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3562, PETRI_PLACES=431, PETRI_TRANSITIONS=456} [2022-11-18 20:15:51,473 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 172 predicate places. [2022-11-18 20:15:51,474 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 456 transitions, 3562 flow [2022-11-18 20:15:51,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 246.92857142857142) internal successors, (3457), 14 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:51,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:51,476 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:51,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:51,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:51,691 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:15:51,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash 783219858, now seen corresponding path program 2 times [2022-11-18 20:15:51,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:51,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067838671] [2022-11-18 20:15:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:51,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:52,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:15:52,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823066592] [2022-11-18 20:15:52,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:15:52,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:52,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:52,314 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:52,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:15:55,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:15:55,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:55,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:15:55,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164526 trivial. 0 not checked. [2022-11-18 20:15:55,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:15:55,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:55,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067838671] [2022-11-18 20:15:55,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:15:55,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823066592] [2022-11-18 20:15:55,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823066592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:55,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:55,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:55,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400830488] [2022-11-18 20:15:55,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:55,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:15:55,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:55,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:15:55,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:15:55,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 284 [2022-11-18 20:15:55,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 456 transitions, 3562 flow. Second operand has 4 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:55,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:55,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 284 [2022-11-18 20:15:55,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:02,033 INFO L130 PetriNetUnfolder]: 11/5359 cut-off events. [2022-11-18 20:16:02,033 INFO L131 PetriNetUnfolder]: For 10626/10664 co-relation queries the response was YES. [2022-11-18 20:16:02,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9134 conditions, 5359 events. 11/5359 cut-off events. For 10626/10664 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 783 event pairs, 0 based on Foata normal form. 6/5335 useless extension candidates. Maximal degree in co-relation 8819. Up to 192 conditions per place. [2022-11-18 20:16:02,057 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 11 selfloop transitions, 4 changer transitions 0/457 dead transitions. [2022-11-18 20:16:02,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 457 transitions, 3594 flow [2022-11-18 20:16:02,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:16:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1262 transitions. [2022-11-18 20:16:02,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8887323943661972 [2022-11-18 20:16:02,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1262 transitions. [2022-11-18 20:16:02,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1262 transitions. [2022-11-18 20:16:02,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:02,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1262 transitions. [2022-11-18 20:16:02,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 252.4) internal successors, (1262), 5 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:02,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:02,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:02,074 INFO L175 Difference]: Start difference. First operand has 431 places, 456 transitions, 3562 flow. Second operand 5 states and 1262 transitions. [2022-11-18 20:16:02,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 457 transitions, 3594 flow [2022-11-18 20:16:02,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 457 transitions, 3554 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-11-18 20:16:02,163 INFO L231 Difference]: Finished difference. Result has 424 places, 455 transitions, 3532 flow [2022-11-18 20:16:02,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3532, PETRI_PLACES=424, PETRI_TRANSITIONS=455} [2022-11-18 20:16:02,165 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 165 predicate places. [2022-11-18 20:16:02,165 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 455 transitions, 3532 flow [2022-11-18 20:16:02,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:02,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:02,168 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:02,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:02,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:16:02,380 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:16:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:02,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1489987736, now seen corresponding path program 1 times [2022-11-18 20:16:02,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:02,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019442142] [2022-11-18 20:16:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:02,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:03,153 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:16:03,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044098018] [2022-11-18 20:16:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:03,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:03,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:03,159 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:16:03,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:16:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:09,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 15391 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:16:09,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 20:16:17,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 20:16:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:25,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019442142] [2022-11-18 20:16:25,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:16:25,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044098018] [2022-11-18 20:16:25,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044098018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:25,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:16:25,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:16:25,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396136491] [2022-11-18 20:16:25,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:16:25,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:25,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:16:25,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:16:25,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-18 20:16:25,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 455 transitions, 3532 flow. Second operand has 16 states, 16 states have (on average 246.875) internal successors, (3950), 16 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:25,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:25,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-18 20:16:25,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:42,760 INFO L130 PetriNetUnfolder]: 11/8928 cut-off events. [2022-11-18 20:16:42,760 INFO L131 PetriNetUnfolder]: For 18814/18815 co-relation queries the response was YES. [2022-11-18 20:16:42,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16396 conditions, 8928 events. 11/8928 cut-off events. For 18814/18815 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 228 event pairs, 0 based on Foata normal form. 4/8918 useless extension candidates. Maximal degree in co-relation 16216. Up to 336 conditions per place. [2022-11-18 20:16:42,796 INFO L137 encePairwiseOnDemand]: 278/284 looper letters, 69 selfloop transitions, 21 changer transitions 0/516 dead transitions. [2022-11-18 20:16:42,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 516 transitions, 3920 flow [2022-11-18 20:16:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:16:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:16:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5176 transitions. [2022-11-18 20:16:42,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678739101274312 [2022-11-18 20:16:42,805 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5176 transitions. [2022-11-18 20:16:42,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5176 transitions. [2022-11-18 20:16:42,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:42,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5176 transitions. [2022-11-18 20:16:42,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 246.47619047619048) internal successors, (5176), 21 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:42,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:42,825 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 284.0) internal successors, (6248), 22 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:42,825 INFO L175 Difference]: Start difference. First operand has 424 places, 455 transitions, 3532 flow. Second operand 21 states and 5176 transitions. [2022-11-18 20:16:42,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 516 transitions, 3920 flow [2022-11-18 20:16:42,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 516 transitions, 3904 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:16:42,941 INFO L231 Difference]: Finished difference. Result has 445 places, 465 transitions, 3667 flow [2022-11-18 20:16:42,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3522, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3667, PETRI_PLACES=445, PETRI_TRANSITIONS=465} [2022-11-18 20:16:42,942 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 186 predicate places. [2022-11-18 20:16:42,942 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 465 transitions, 3667 flow [2022-11-18 20:16:42,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 246.875) internal successors, (3950), 16 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:42,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:42,947 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:43,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:43,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:16:43,167 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:16:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:43,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2006174068, now seen corresponding path program 2 times [2022-11-18 20:16:43,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:43,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782466243] [2022-11-18 20:16:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:44,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:16:44,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533939055] [2022-11-18 20:16:44,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:16:44,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:44,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:44,534 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:16:44,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:16:50,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:16:50,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:16:50,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:16:50,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 901558 trivial. 0 not checked. [2022-11-18 20:16:51,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:16:51,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:51,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782466243] [2022-11-18 20:16:51,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:16:51,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533939055] [2022-11-18 20:16:51,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533939055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:51,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:51,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:51,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085506269] [2022-11-18 20:16:51,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:51,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:51,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 284 [2022-11-18 20:16:51,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 465 transitions, 3667 flow. Second operand has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:51,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:51,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 284 [2022-11-18 20:16:51,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:17:06,294 INFO L130 PetriNetUnfolder]: 11/8927 cut-off events. [2022-11-18 20:17:06,294 INFO L131 PetriNetUnfolder]: For 18864/18881 co-relation queries the response was YES. [2022-11-18 20:17:06,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15539 conditions, 8927 events. 11/8927 cut-off events. For 18864/18881 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 1/8915 useless extension candidates. Maximal degree in co-relation 15351. Up to 336 conditions per place. [2022-11-18 20:17:06,328 INFO L137 encePairwiseOnDemand]: 280/284 looper letters, 9 selfloop transitions, 3 changer transitions 0/464 dead transitions. [2022-11-18 20:17:06,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 464 transitions, 3689 flow [2022-11-18 20:17:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:17:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:17:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1009 transitions. [2022-11-18 20:17:06,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8882042253521126 [2022-11-18 20:17:06,331 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1009 transitions. [2022-11-18 20:17:06,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1009 transitions. [2022-11-18 20:17:06,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:06,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1009 transitions. [2022-11-18 20:17:06,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:06,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:06,336 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:06,336 INFO L175 Difference]: Start difference. First operand has 445 places, 465 transitions, 3667 flow. Second operand 4 states and 1009 transitions. [2022-11-18 20:17:06,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 464 transitions, 3689 flow [2022-11-18 20:17:06,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 464 transitions, 3671 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:17:06,437 INFO L231 Difference]: Finished difference. Result has 438 places, 464 transitions, 3653 flow [2022-11-18 20:17:06,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3653, PETRI_PLACES=438, PETRI_TRANSITIONS=464} [2022-11-18 20:17:06,438 INFO L288 CegarLoopForPetriNet]: 259 programPoint places, 179 predicate places. [2022-11-18 20:17:06,439 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 464 transitions, 3653 flow [2022-11-18 20:17:06,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:06,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:17:06,442 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:06,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:06,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:17:06,669 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:17:06,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2009554469, now seen corresponding path program 1 times [2022-11-18 20:17:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:06,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353936239] [2022-11-18 20:17:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:06,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:08,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:17:08,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226141244] [2022-11-18 20:17:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:08,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:08,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:08,125 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:08,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f2820b-2339-4530-99b8-8509c2b96eec/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:17:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:21,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 35652 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:17:21,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-18 20:17:38,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:17:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-18 20:17:57,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:57,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353936239] [2022-11-18 20:17:57,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:17:57,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226141244] [2022-11-18 20:17:57,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226141244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:17:57,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:17:57,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-18 20:17:57,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798271484] [2022-11-18 20:17:57,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:17:57,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:17:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:17:57,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:17:57,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 284 [2022-11-18 20:17:57,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 464 transitions, 3653 flow. Second operand has 21 states, 21 states have (on average 247.42857142857142) internal successors, (5196), 21 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:57,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:17:57,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 284 [2022-11-18 20:17:57,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand